/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/chl/poker-hand-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 17:37:32,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 17:37:32,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 17:37:32,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 17:37:32,999 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 [2021-07-09 17:37:33,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 17:37:33,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 17:37:33,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 17:37:33,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 17:37:33,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 17:37:33,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 17:37:33,029 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 17:37:33,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 17:37:33,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 17:37:33,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 17:37:33,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:37:33,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 17:37:33,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 17:37:33,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 17:37:33,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 17:37:33,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 17:37:33,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 17:37:33,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 17:37:33,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 17:37:33,253 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 17:37:33,254 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 17:37:33,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-subst.wvr.bpl [2021-07-09 17:37:33,254 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-subst.wvr.bpl' [2021-07-09 17:37:33,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 17:37:33,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 17:37:33,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 17:37:33,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 17:37:33,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 17:37:33,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 17:37:33,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 17:37:33,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 17:37:33,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 17:37:33,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... [2021-07-09 17:37:33,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 17:37:33,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 17:37:33,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 17:37:33,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 17:37:33,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:37:33,502 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 17:37:33,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 17:37:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 17:37:33,503 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 17:37:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 17:37:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 17:37:33,503 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 17:37:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 17:37:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 17:37:33,504 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 17:37:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 17:37:33,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 17:37:33,505 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 17:37:34,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 17:37:34,090 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-09 17:37:34,091 INFO L202 PluginConnector]: Adding new model poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:37:34 BoogieIcfgContainer [2021-07-09 17:37:34,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 17:37:34,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 17:37:34,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 17:37:34,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 17:37:34,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:37:33" (1/2) ... [2021-07-09 17:37:34,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f80b707 and model type poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 05:37:34, skipping insertion in model container [2021-07-09 17:37:34,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:37:34" (2/2) ... [2021-07-09 17:37:34,096 INFO L111 eAbstractionObserver]: Analyzing ICFG poker-hand-subst.wvr.bpl [2021-07-09 17:37:34,099 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 17:37:34,099 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 17:37:34,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 17:37:34,100 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 17:37:34,121 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 17:37:34,135 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 17:37:34,153 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:37:34,154 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:37:34,154 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:37:34,154 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:37:34,154 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:37:34,154 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:37:34,154 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:37:34,154 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:37:34,161 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 37 transitions, 98 flow [2021-07-09 17:37:34,192 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 189 states, 188 states have (on average 4.468085106382978) internal successors, (840), 188 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 188 states have (on average 4.468085106382978) internal successors, (840), 188 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-09 17:37:34,204 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:34,205 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:34,205 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2024028845, now seen corresponding path program 1 times [2021-07-09 17:37:34,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:34,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769673788] [2021-07-09 17:37:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:34,803 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2021-07-09 17:37:35,128 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2021-07-09 17:37:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:35,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:35,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769673788] [2021-07-09 17:37:35,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769673788] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:35,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:35,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:35,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970327788] [2021-07-09 17:37:35,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:35,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:35,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:35,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:35,205 INFO L87 Difference]: Start difference. First operand has 189 states, 188 states have (on average 4.468085106382978) internal successors, (840), 188 states have internal predecessors, (840), 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 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:35,461 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-07-09 17:37:35,788 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-07-09 17:37:35,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:35,877 INFO L93 Difference]: Finished difference Result 474 states and 1876 transitions. [2021-07-09 17:37:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:35,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-07-09 17:37:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:35,890 INFO L225 Difference]: With dead ends: 474 [2021-07-09 17:37:35,891 INFO L226 Difference]: Without dead ends: 459 [2021-07-09 17:37:35,892 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 927.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:35,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-07-09 17:37:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 223. [2021-07-09 17:37:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 4.324324324324325) internal successors, (960), 222 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 960 transitions. [2021-07-09 17:37:35,970 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 960 transitions. Word has length 14 [2021-07-09 17:37:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:35,970 INFO L482 AbstractCegarLoop]: Abstraction has 223 states and 960 transitions. [2021-07-09 17:37:35,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:35,971 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 960 transitions. [2021-07-09 17:37:35,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-09 17:37:35,972 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:35,972 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:35,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 17:37:35,973 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:35,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1233644461, now seen corresponding path program 2 times [2021-07-09 17:37:35,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:35,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567375532] [2021-07-09 17:37:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:36,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:36,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567375532] [2021-07-09 17:37:36,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567375532] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:36,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:36,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:36,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79983852] [2021-07-09 17:37:36,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:36,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:36,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:36,316 INFO L87 Difference]: Start difference. First operand 223 states and 960 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:36,583 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-07-09 17:37:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:36,832 INFO L93 Difference]: Finished difference Result 685 states and 2857 transitions. [2021-07-09 17:37:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:37:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-07-09 17:37:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:36,837 INFO L225 Difference]: With dead ends: 685 [2021-07-09 17:37:36,837 INFO L226 Difference]: Without dead ends: 670 [2021-07-09 17:37:36,838 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 512.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:37:36,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-07-09 17:37:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 227. [2021-07-09 17:37:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 4.300884955752212) internal successors, (972), 226 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 972 transitions. [2021-07-09 17:37:36,851 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 972 transitions. Word has length 14 [2021-07-09 17:37:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:36,851 INFO L482 AbstractCegarLoop]: Abstraction has 227 states and 972 transitions. [2021-07-09 17:37:36,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 972 transitions. [2021-07-09 17:37:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-09 17:37:36,853 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:36,853 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:36,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 17:37:36,853 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:36,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1840634711, now seen corresponding path program 3 times [2021-07-09 17:37:36,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:36,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283736916] [2021-07-09 17:37:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:37,130 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-07-09 17:37:37,587 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2021-07-09 17:37:37,722 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 24 [2021-07-09 17:37:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:37,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:37,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283736916] [2021-07-09 17:37:37,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283736916] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:37,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:37,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:37,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694110865] [2021-07-09 17:37:37,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:37,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:37,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:37,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:37,726 INFO L87 Difference]: Start difference. First operand 227 states and 972 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:38,184 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 128 [2021-07-09 17:37:38,579 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 115 [2021-07-09 17:37:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:38,706 INFO L93 Difference]: Finished difference Result 506 states and 2014 transitions. [2021-07-09 17:37:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:38,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-07-09 17:37:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:38,709 INFO L225 Difference]: With dead ends: 506 [2021-07-09 17:37:38,709 INFO L226 Difference]: Without dead ends: 491 [2021-07-09 17:37:38,709 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1370.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-07-09 17:37:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 234. [2021-07-09 17:37:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 4.309012875536481) internal successors, (1004), 233 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 1004 transitions. [2021-07-09 17:37:38,719 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 1004 transitions. Word has length 14 [2021-07-09 17:37:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:38,720 INFO L482 AbstractCegarLoop]: Abstraction has 234 states and 1004 transitions. [2021-07-09 17:37:38,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 1004 transitions. [2021-07-09 17:37:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-09 17:37:38,721 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:38,721 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:38,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 17:37:38,722 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:38,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:38,722 INFO L82 PathProgramCache]: Analyzing trace with hash -867555397, now seen corresponding path program 4 times [2021-07-09 17:37:38,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:38,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386636917] [2021-07-09 17:37:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:39,209 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-07-09 17:37:39,755 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2021-07-09 17:37:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:39,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:39,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386636917] [2021-07-09 17:37:39,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386636917] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:39,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:39,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:39,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862725552] [2021-07-09 17:37:39,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:39,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:39,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:39,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:39,855 INFO L87 Difference]: Start difference. First operand 234 states and 1004 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:40,268 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 129 [2021-07-09 17:37:40,630 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2021-07-09 17:37:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:40,723 INFO L93 Difference]: Finished difference Result 526 states and 2085 transitions. [2021-07-09 17:37:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:40,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-07-09 17:37:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:40,727 INFO L225 Difference]: With dead ends: 526 [2021-07-09 17:37:40,727 INFO L226 Difference]: Without dead ends: 511 [2021-07-09 17:37:40,727 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1573.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-07-09 17:37:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 240. [2021-07-09 17:37:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 4.2803347280334725) internal successors, (1023), 239 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 1023 transitions. [2021-07-09 17:37:40,735 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 1023 transitions. Word has length 14 [2021-07-09 17:37:40,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:40,736 INFO L482 AbstractCegarLoop]: Abstraction has 240 states and 1023 transitions. [2021-07-09 17:37:40,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 1023 transitions. [2021-07-09 17:37:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-09 17:37:40,737 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:40,737 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:40,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 17:37:40,737 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:40,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:40,738 INFO L82 PathProgramCache]: Analyzing trace with hash 922889575, now seen corresponding path program 5 times [2021-07-09 17:37:40,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:40,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374064668] [2021-07-09 17:37:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:41,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:41,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374064668] [2021-07-09 17:37:41,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374064668] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:41,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:41,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:41,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078691563] [2021-07-09 17:37:41,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:41,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:41,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:41,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:41,039 INFO L87 Difference]: Start difference. First operand 240 states and 1023 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:41,391 INFO L93 Difference]: Finished difference Result 697 states and 2896 transitions. [2021-07-09 17:37:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:37:41,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-07-09 17:37:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:41,396 INFO L225 Difference]: With dead ends: 697 [2021-07-09 17:37:41,396 INFO L226 Difference]: Without dead ends: 682 [2021-07-09 17:37:41,396 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 375.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:37:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-07-09 17:37:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 242. [2021-07-09 17:37:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 4.2987551867219915) internal successors, (1036), 241 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 1036 transitions. [2021-07-09 17:37:41,405 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 1036 transitions. Word has length 14 [2021-07-09 17:37:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:41,405 INFO L482 AbstractCegarLoop]: Abstraction has 242 states and 1036 transitions. [2021-07-09 17:37:41,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 1036 transitions. [2021-07-09 17:37:41,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-07-09 17:37:41,406 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:41,406 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:41,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 17:37:41,407 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:41,407 INFO L82 PathProgramCache]: Analyzing trace with hash 594755113, now seen corresponding path program 6 times [2021-07-09 17:37:41,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:41,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024512792] [2021-07-09 17:37:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:41,646 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2021-07-09 17:37:41,945 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2021-07-09 17:37:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:42,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024512792] [2021-07-09 17:37:42,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024512792] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:42,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030078377] [2021-07-09 17:37:42,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:42,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:42,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:42,007 INFO L87 Difference]: Start difference. First operand 242 states and 1036 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,223 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-07-09 17:37:42,429 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-07-09 17:37:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,494 INFO L93 Difference]: Finished difference Result 505 states and 1974 transitions. [2021-07-09 17:37:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:42,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-07-09 17:37:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,498 INFO L225 Difference]: With dead ends: 505 [2021-07-09 17:37:42,498 INFO L226 Difference]: Without dead ends: 490 [2021-07-09 17:37:42,498 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 803.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-07-09 17:37:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 263. [2021-07-09 17:37:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 4.198473282442748) internal successors, (1100), 262 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 1100 transitions. [2021-07-09 17:37:42,508 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 1100 transitions. Word has length 14 [2021-07-09 17:37:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,508 INFO L482 AbstractCegarLoop]: Abstraction has 263 states and 1100 transitions. [2021-07-09 17:37:42,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 1100 transitions. [2021-07-09 17:37:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-09 17:37:42,509 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,509 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 17:37:42,510 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1857764697, now seen corresponding path program 1 times [2021-07-09 17:37:42,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301859474] [2021-07-09 17:37:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:42,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301859474] [2021-07-09 17:37:42,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301859474] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:37:42,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643542700] [2021-07-09 17:37:42,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:37:42,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:37:42,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,542 INFO L87 Difference]: Start difference. First operand 263 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,547 INFO L93 Difference]: Finished difference Result 303 states and 1256 transitions. [2021-07-09 17:37:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:37:42,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-07-09 17:37:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,549 INFO L225 Difference]: With dead ends: 303 [2021-07-09 17:37:42,549 INFO L226 Difference]: Without dead ends: 303 [2021-07-09 17:37:42,550 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-07-09 17:37:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-07-09 17:37:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 4.158940397350993) internal successors, (1256), 302 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 1256 transitions. [2021-07-09 17:37:42,557 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 1256 transitions. Word has length 15 [2021-07-09 17:37:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,557 INFO L482 AbstractCegarLoop]: Abstraction has 303 states and 1256 transitions. [2021-07-09 17:37:42,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 1256 transitions. [2021-07-09 17:37:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-09 17:37:42,559 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,559 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 17:37:42,559 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1849748711, now seen corresponding path program 1 times [2021-07-09 17:37:42,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636768414] [2021-07-09 17:37:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:42,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636768414] [2021-07-09 17:37:42,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636768414] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:37:42,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433446951] [2021-07-09 17:37:42,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:37:42,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:37:42,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,577 INFO L87 Difference]: Start difference. First operand 303 states and 1256 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,582 INFO L93 Difference]: Finished difference Result 343 states and 1412 transitions. [2021-07-09 17:37:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:37:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-07-09 17:37:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,584 INFO L225 Difference]: With dead ends: 343 [2021-07-09 17:37:42,584 INFO L226 Difference]: Without dead ends: 343 [2021-07-09 17:37:42,585 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-07-09 17:37:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-07-09 17:37:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 4.128654970760234) internal successors, (1412), 342 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 1412 transitions. [2021-07-09 17:37:42,593 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 1412 transitions. Word has length 15 [2021-07-09 17:37:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,593 INFO L482 AbstractCegarLoop]: Abstraction has 343 states and 1412 transitions. [2021-07-09 17:37:42,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 1412 transitions. [2021-07-09 17:37:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-09 17:37:42,594 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,594 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 17:37:42,594 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1748926659, now seen corresponding path program 1 times [2021-07-09 17:37:42,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577582598] [2021-07-09 17:37:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:42,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577582598] [2021-07-09 17:37:42,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577582598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:37:42,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605679095] [2021-07-09 17:37:42,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:37:42,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:37:42,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,618 INFO L87 Difference]: Start difference. First operand 343 states and 1412 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,623 INFO L93 Difference]: Finished difference Result 389 states and 1589 transitions. [2021-07-09 17:37:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:37:42,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-07-09 17:37:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,628 INFO L225 Difference]: With dead ends: 389 [2021-07-09 17:37:42,628 INFO L226 Difference]: Without dead ends: 389 [2021-07-09 17:37:42,630 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-07-09 17:37:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-07-09 17:37:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 4.095360824742268) internal successors, (1589), 388 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1589 transitions. [2021-07-09 17:37:42,641 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1589 transitions. Word has length 15 [2021-07-09 17:37:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,641 INFO L482 AbstractCegarLoop]: Abstraction has 389 states and 1589 transitions. [2021-07-09 17:37:42,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1589 transitions. [2021-07-09 17:37:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-09 17:37:42,642 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,642 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 17:37:42,642 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2109293491, now seen corresponding path program 1 times [2021-07-09 17:37:42,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958155158] [2021-07-09 17:37:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:42,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958155158] [2021-07-09 17:37:42,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958155158] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:37:42,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553194620] [2021-07-09 17:37:42,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:37:42,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:37:42,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,664 INFO L87 Difference]: Start difference. First operand 389 states and 1589 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,669 INFO L93 Difference]: Finished difference Result 439 states and 1766 transitions. [2021-07-09 17:37:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:37:42,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-07-09 17:37:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,672 INFO L225 Difference]: With dead ends: 439 [2021-07-09 17:37:42,672 INFO L226 Difference]: Without dead ends: 439 [2021-07-09 17:37:42,674 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-07-09 17:37:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-07-09 17:37:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 4.031963470319635) internal successors, (1766), 438 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1766 transitions. [2021-07-09 17:37:42,686 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1766 transitions. Word has length 15 [2021-07-09 17:37:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,686 INFO L482 AbstractCegarLoop]: Abstraction has 439 states and 1766 transitions. [2021-07-09 17:37:42,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1766 transitions. [2021-07-09 17:37:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-09 17:37:42,688 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,688 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 17:37:42,688 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash 181705837, now seen corresponding path program 1 times [2021-07-09 17:37:42,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791649713] [2021-07-09 17:37:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:42,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791649713] [2021-07-09 17:37:42,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791649713] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:37:42,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772148327] [2021-07-09 17:37:42,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:37:42,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:37:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,708 INFO L87 Difference]: Start difference. First operand 439 states and 1766 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,713 INFO L93 Difference]: Finished difference Result 489 states and 1957 transitions. [2021-07-09 17:37:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:37:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-07-09 17:37:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,716 INFO L225 Difference]: With dead ends: 489 [2021-07-09 17:37:42,716 INFO L226 Difference]: Without dead ends: 489 [2021-07-09 17:37:42,717 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-07-09 17:37:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2021-07-09 17:37:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 4.010245901639344) internal successors, (1957), 488 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1957 transitions. [2021-07-09 17:37:42,727 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1957 transitions. Word has length 15 [2021-07-09 17:37:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,728 INFO L482 AbstractCegarLoop]: Abstraction has 489 states and 1957 transitions. [2021-07-09 17:37:42,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1957 transitions. [2021-07-09 17:37:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-09 17:37:42,730 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,730 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 17:37:42,730 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,730 INFO L82 PathProgramCache]: Analyzing trace with hash 542072669, now seen corresponding path program 1 times [2021-07-09 17:37:42,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63663635] [2021-07-09 17:37:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:42,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63663635] [2021-07-09 17:37:42,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63663635] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:37:42,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338899969] [2021-07-09 17:37:42,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:37:42,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:37:42,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,744 INFO L87 Difference]: Start difference. First operand 489 states and 1957 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,749 INFO L93 Difference]: Finished difference Result 549 states and 2181 transitions. [2021-07-09 17:37:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:37:42,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-07-09 17:37:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,752 INFO L225 Difference]: With dead ends: 549 [2021-07-09 17:37:42,752 INFO L226 Difference]: Without dead ends: 549 [2021-07-09 17:37:42,753 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:37:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-07-09 17:37:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2021-07-09 17:37:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 3.97992700729927) internal successors, (2181), 548 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 2181 transitions. [2021-07-09 17:37:42,767 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 2181 transitions. Word has length 15 [2021-07-09 17:37:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,767 INFO L482 AbstractCegarLoop]: Abstraction has 549 states and 2181 transitions. [2021-07-09 17:37:42,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 2181 transitions. [2021-07-09 17:37:42,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:42,769 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,769 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 17:37:42,769 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,769 INFO L82 PathProgramCache]: Analyzing trace with hash 705140398, now seen corresponding path program 1 times [2021-07-09 17:37:42,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075927484] [2021-07-09 17:37:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:42,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075927484] [2021-07-09 17:37:42,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075927484] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:42,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255406426] [2021-07-09 17:37:42,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:42,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:42,792 INFO L87 Difference]: Start difference. First operand 549 states and 2181 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:42,823 INFO L93 Difference]: Finished difference Result 789 states and 2890 transitions. [2021-07-09 17:37:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 17:37:42,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:42,827 INFO L225 Difference]: With dead ends: 789 [2021-07-09 17:37:42,827 INFO L226 Difference]: Without dead ends: 689 [2021-07-09 17:37:42,827 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:42,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-07-09 17:37:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 565. [2021-07-09 17:37:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 3.891843971631206) internal successors, (2195), 564 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 2195 transitions. [2021-07-09 17:37:42,840 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 2195 transitions. Word has length 16 [2021-07-09 17:37:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:42,841 INFO L482 AbstractCegarLoop]: Abstraction has 565 states and 2195 transitions. [2021-07-09 17:37:42,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 2195 transitions. [2021-07-09 17:37:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:42,842 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:42,842 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:42,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 17:37:42,842 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:42,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1842088947, now seen corresponding path program 1 times [2021-07-09 17:37:42,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:42,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168128182] [2021-07-09 17:37:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:42,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:42,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168128182] [2021-07-09 17:37:42,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168128182] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:42,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:42,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:42,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885973239] [2021-07-09 17:37:42,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:42,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:42,992 INFO L87 Difference]: Start difference. First operand 565 states and 2195 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:43,267 INFO L93 Difference]: Finished difference Result 1056 states and 3563 transitions. [2021-07-09 17:37:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:37:43,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:43,271 INFO L225 Difference]: With dead ends: 1056 [2021-07-09 17:37:43,271 INFO L226 Difference]: Without dead ends: 903 [2021-07-09 17:37:43,272 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 227.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:43,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-07-09 17:37:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 566. [2021-07-09 17:37:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.720353982300885) internal successors, (2102), 565 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 2102 transitions. [2021-07-09 17:37:43,287 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 2102 transitions. Word has length 16 [2021-07-09 17:37:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:43,287 INFO L482 AbstractCegarLoop]: Abstraction has 566 states and 2102 transitions. [2021-07-09 17:37:43,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 2102 transitions. [2021-07-09 17:37:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:43,289 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:43,289 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:43,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 17:37:43,289 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:43,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:43,289 INFO L82 PathProgramCache]: Analyzing trace with hash 768619160, now seen corresponding path program 1 times [2021-07-09 17:37:43,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:43,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998270557] [2021-07-09 17:37:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:43,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:43,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998270557] [2021-07-09 17:37:43,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998270557] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:43,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:43,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:43,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507898126] [2021-07-09 17:37:43,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:43,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:43,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:43,347 INFO L87 Difference]: Start difference. First operand 566 states and 2102 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:43,415 INFO L93 Difference]: Finished difference Result 783 states and 2589 transitions. [2021-07-09 17:37:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:43,418 INFO L225 Difference]: With dead ends: 783 [2021-07-09 17:37:43,418 INFO L226 Difference]: Without dead ends: 746 [2021-07-09 17:37:43,419 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-07-09 17:37:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 560. [2021-07-09 17:37:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.584973166368515) internal successors, (2004), 559 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 2004 transitions. [2021-07-09 17:37:43,431 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 2004 transitions. Word has length 16 [2021-07-09 17:37:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:43,431 INFO L482 AbstractCegarLoop]: Abstraction has 560 states and 2004 transitions. [2021-07-09 17:37:43,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 2004 transitions. [2021-07-09 17:37:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:43,432 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:43,432 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:43,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 17:37:43,432 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash -881757258, now seen corresponding path program 1 times [2021-07-09 17:37:43,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:43,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137000796] [2021-07-09 17:37:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:43,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:43,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137000796] [2021-07-09 17:37:43,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137000796] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:43,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:43,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:43,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595329597] [2021-07-09 17:37:43,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:43,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:43,502 INFO L87 Difference]: Start difference. First operand 560 states and 2004 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:43,579 INFO L93 Difference]: Finished difference Result 870 states and 2899 transitions. [2021-07-09 17:37:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:43,583 INFO L225 Difference]: With dead ends: 870 [2021-07-09 17:37:43,583 INFO L226 Difference]: Without dead ends: 828 [2021-07-09 17:37:43,584 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-07-09 17:37:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 560. [2021-07-09 17:37:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.5778175313059033) internal successors, (2000), 559 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 2000 transitions. [2021-07-09 17:37:43,595 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 2000 transitions. Word has length 16 [2021-07-09 17:37:43,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:43,596 INFO L482 AbstractCegarLoop]: Abstraction has 560 states and 2000 transitions. [2021-07-09 17:37:43,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 2000 transitions. [2021-07-09 17:37:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:43,597 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:43,597 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:43,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 17:37:43,597 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:43,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1488759573, now seen corresponding path program 1 times [2021-07-09 17:37:43,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:43,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221621795] [2021-07-09 17:37:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:43,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:43,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221621795] [2021-07-09 17:37:43,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221621795] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:43,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:43,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:43,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486173388] [2021-07-09 17:37:43,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:43,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:43,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:43,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:43,941 INFO L87 Difference]: Start difference. First operand 560 states and 2000 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:44,145 INFO L93 Difference]: Finished difference Result 839 states and 2793 transitions. [2021-07-09 17:37:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:44,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:44,149 INFO L225 Difference]: With dead ends: 839 [2021-07-09 17:37:44,149 INFO L226 Difference]: Without dead ends: 797 [2021-07-09 17:37:44,149 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 364.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-07-09 17:37:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 560. [2021-07-09 17:37:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.5706618962432914) internal successors, (1996), 559 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1996 transitions. [2021-07-09 17:37:44,160 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1996 transitions. Word has length 16 [2021-07-09 17:37:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:44,160 INFO L482 AbstractCegarLoop]: Abstraction has 560 states and 1996 transitions. [2021-07-09 17:37:44,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1996 transitions. [2021-07-09 17:37:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:44,162 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:44,162 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:44,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 17:37:44,162 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:44,162 INFO L82 PathProgramCache]: Analyzing trace with hash 185156587, now seen corresponding path program 1 times [2021-07-09 17:37:44,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:44,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659651877] [2021-07-09 17:37:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:44,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:44,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659651877] [2021-07-09 17:37:44,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659651877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:44,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:44,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:44,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807308274] [2021-07-09 17:37:44,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:44,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:44,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:44,211 INFO L87 Difference]: Start difference. First operand 560 states and 1996 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:44,249 INFO L93 Difference]: Finished difference Result 694 states and 2293 transitions. [2021-07-09 17:37:44,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 17:37:44,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:44,253 INFO L225 Difference]: With dead ends: 694 [2021-07-09 17:37:44,253 INFO L226 Difference]: Without dead ends: 613 [2021-07-09 17:37:44,254 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-07-09 17:37:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 490. [2021-07-09 17:37:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.5337423312883436) internal successors, (1728), 489 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1728 transitions. [2021-07-09 17:37:44,263 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1728 transitions. Word has length 16 [2021-07-09 17:37:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:44,263 INFO L482 AbstractCegarLoop]: Abstraction has 490 states and 1728 transitions. [2021-07-09 17:37:44,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1728 transitions. [2021-07-09 17:37:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:44,264 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:44,265 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:44,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 17:37:44,265 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:44,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1866944204, now seen corresponding path program 2 times [2021-07-09 17:37:44,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:44,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250254105] [2021-07-09 17:37:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:44,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:44,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250254105] [2021-07-09 17:37:44,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250254105] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:44,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:44,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:44,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492735032] [2021-07-09 17:37:44,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:44,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:44,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:44,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:44,329 INFO L87 Difference]: Start difference. First operand 490 states and 1728 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:44,455 INFO L93 Difference]: Finished difference Result 937 states and 3020 transitions. [2021-07-09 17:37:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:37:44,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:44,459 INFO L225 Difference]: With dead ends: 937 [2021-07-09 17:37:44,459 INFO L226 Difference]: Without dead ends: 819 [2021-07-09 17:37:44,459 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-07-09 17:37:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 479. [2021-07-09 17:37:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 3.50418410041841) internal successors, (1675), 478 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1675 transitions. [2021-07-09 17:37:44,470 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1675 transitions. Word has length 16 [2021-07-09 17:37:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:44,470 INFO L482 AbstractCegarLoop]: Abstraction has 479 states and 1675 transitions. [2021-07-09 17:37:44,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1675 transitions. [2021-07-09 17:37:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:44,471 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:44,471 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:44,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 17:37:44,471 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1453708437, now seen corresponding path program 2 times [2021-07-09 17:37:44,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:44,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798020214] [2021-07-09 17:37:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:44,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:44,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798020214] [2021-07-09 17:37:44,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798020214] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:44,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:44,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:44,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760145712] [2021-07-09 17:37:44,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:44,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:44,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:44,617 INFO L87 Difference]: Start difference. First operand 479 states and 1675 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:44,852 INFO L93 Difference]: Finished difference Result 990 states and 3110 transitions. [2021-07-09 17:37:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:37:44,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:44,856 INFO L225 Difference]: With dead ends: 990 [2021-07-09 17:37:44,856 INFO L226 Difference]: Without dead ends: 861 [2021-07-09 17:37:44,856 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 202.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-07-09 17:37:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 447. [2021-07-09 17:37:44,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.3430493273542603) internal successors, (1491), 446 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1491 transitions. [2021-07-09 17:37:44,865 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1491 transitions. Word has length 16 [2021-07-09 17:37:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:44,865 INFO L482 AbstractCegarLoop]: Abstraction has 447 states and 1491 transitions. [2021-07-09 17:37:44,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1491 transitions. [2021-07-09 17:37:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:44,867 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:44,867 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:44,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 17:37:44,867 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1227931188, now seen corresponding path program 2 times [2021-07-09 17:37:44,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:44,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200076051] [2021-07-09 17:37:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:44,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:44,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200076051] [2021-07-09 17:37:44,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200076051] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:44,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:44,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:44,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939944811] [2021-07-09 17:37:44,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:44,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:44,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:44,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:44,957 INFO L87 Difference]: Start difference. First operand 447 states and 1491 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:45,128 INFO L93 Difference]: Finished difference Result 772 states and 2437 transitions. [2021-07-09 17:37:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:37:45,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:45,132 INFO L225 Difference]: With dead ends: 772 [2021-07-09 17:37:45,132 INFO L226 Difference]: Without dead ends: 749 [2021-07-09 17:37:45,132 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:37:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-07-09 17:37:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 447. [2021-07-09 17:37:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.3430493273542603) internal successors, (1491), 446 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1491 transitions. [2021-07-09 17:37:45,141 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1491 transitions. Word has length 16 [2021-07-09 17:37:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:45,141 INFO L482 AbstractCegarLoop]: Abstraction has 447 states and 1491 transitions. [2021-07-09 17:37:45,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1491 transitions. [2021-07-09 17:37:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:45,143 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:45,143 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:45,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 17:37:45,143 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:45,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1214418261, now seen corresponding path program 2 times [2021-07-09 17:37:45,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:45,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173727366] [2021-07-09 17:37:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:45,322 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-07-09 17:37:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:45,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:45,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173727366] [2021-07-09 17:37:45,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173727366] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:45,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:45,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:45,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118079330] [2021-07-09 17:37:45,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:45,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:45,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:45,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:45,483 INFO L87 Difference]: Start difference. First operand 447 states and 1491 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,622 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2021-07-09 17:37:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:45,832 INFO L93 Difference]: Finished difference Result 756 states and 2389 transitions. [2021-07-09 17:37:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:37:45,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:45,835 INFO L225 Difference]: With dead ends: 756 [2021-07-09 17:37:45,835 INFO L226 Difference]: Without dead ends: 729 [2021-07-09 17:37:45,835 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 510.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-07-09 17:37:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 447. [2021-07-09 17:37:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.3385650224215246) internal successors, (1489), 446 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1489 transitions. [2021-07-09 17:37:45,844 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1489 transitions. Word has length 16 [2021-07-09 17:37:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:45,844 INFO L482 AbstractCegarLoop]: Abstraction has 447 states and 1489 transitions. [2021-07-09 17:37:45,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1489 transitions. [2021-07-09 17:37:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:45,845 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:45,846 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:45,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 17:37:45,846 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:45,846 INFO L82 PathProgramCache]: Analyzing trace with hash 423749436, now seen corresponding path program 3 times [2021-07-09 17:37:45,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:45,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993828707] [2021-07-09 17:37:45,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:45,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:45,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993828707] [2021-07-09 17:37:45,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993828707] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:45,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:45,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:45,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524210946] [2021-07-09 17:37:45,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:45,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:45,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:45,881 INFO L87 Difference]: Start difference. First operand 447 states and 1489 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:45,949 INFO L93 Difference]: Finished difference Result 570 states and 1746 transitions. [2021-07-09 17:37:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:45,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:45,951 INFO L225 Difference]: With dead ends: 570 [2021-07-09 17:37:45,951 INFO L226 Difference]: Without dead ends: 521 [2021-07-09 17:37:45,951 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-07-09 17:37:45,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 411. [2021-07-09 17:37:45,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 3.3) internal successors, (1353), 410 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1353 transitions. [2021-07-09 17:37:45,959 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1353 transitions. Word has length 16 [2021-07-09 17:37:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:45,959 INFO L482 AbstractCegarLoop]: Abstraction has 411 states and 1353 transitions. [2021-07-09 17:37:45,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1353 transitions. [2021-07-09 17:37:45,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:45,960 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:45,960 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:45,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 17:37:45,960 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash 486403162, now seen corresponding path program 3 times [2021-07-09 17:37:45,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:45,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138389798] [2021-07-09 17:37:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:45,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:45,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138389798] [2021-07-09 17:37:45,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138389798] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:45,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:45,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:45,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204813033] [2021-07-09 17:37:45,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:45,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:45,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:45,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:45,998 INFO L87 Difference]: Start difference. First operand 411 states and 1353 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:46,066 INFO L93 Difference]: Finished difference Result 529 states and 1624 transitions. [2021-07-09 17:37:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:46,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:46,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:46,068 INFO L225 Difference]: With dead ends: 529 [2021-07-09 17:37:46,068 INFO L226 Difference]: Without dead ends: 506 [2021-07-09 17:37:46,068 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:46,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-07-09 17:37:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 430. [2021-07-09 17:37:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.2634032634032635) internal successors, (1400), 429 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1400 transitions. [2021-07-09 17:37:46,075 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1400 transitions. Word has length 16 [2021-07-09 17:37:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:46,075 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1400 transitions. [2021-07-09 17:37:46,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1400 transitions. [2021-07-09 17:37:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:46,076 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:46,076 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:46,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 17:37:46,076 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:46,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1119769510, now seen corresponding path program 4 times [2021-07-09 17:37:46,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:46,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722353849] [2021-07-09 17:37:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:46,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:46,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722353849] [2021-07-09 17:37:46,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722353849] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:46,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:46,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:46,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709317496] [2021-07-09 17:37:46,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:46,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:46,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:46,131 INFO L87 Difference]: Start difference. First operand 430 states and 1400 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:46,188 INFO L93 Difference]: Finished difference Result 537 states and 1643 transitions. [2021-07-09 17:37:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:46,189 INFO L225 Difference]: With dead ends: 537 [2021-07-09 17:37:46,189 INFO L226 Difference]: Without dead ends: 514 [2021-07-09 17:37:46,190 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-07-09 17:37:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2021-07-09 17:37:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.2460136674259683) internal successors, (1425), 439 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1425 transitions. [2021-07-09 17:37:46,198 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1425 transitions. Word has length 16 [2021-07-09 17:37:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:46,198 INFO L482 AbstractCegarLoop]: Abstraction has 440 states and 1425 transitions. [2021-07-09 17:37:46,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1425 transitions. [2021-07-09 17:37:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:46,199 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:46,199 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:46,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 17:37:46,199 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2014690215, now seen corresponding path program 3 times [2021-07-09 17:37:46,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:46,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125918977] [2021-07-09 17:37:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:46,354 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-09 17:37:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:46,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:46,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125918977] [2021-07-09 17:37:46,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125918977] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:46,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:46,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:46,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420493446] [2021-07-09 17:37:46,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:46,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:46,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:46,383 INFO L87 Difference]: Start difference. First operand 440 states and 1425 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,622 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2021-07-09 17:37:46,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:46,645 INFO L93 Difference]: Finished difference Result 558 states and 1685 transitions. [2021-07-09 17:37:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:46,646 INFO L225 Difference]: With dead ends: 558 [2021-07-09 17:37:46,646 INFO L226 Difference]: Without dead ends: 516 [2021-07-09 17:37:46,647 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 341.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-07-09 17:37:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 440. [2021-07-09 17:37:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.225512528473804) internal successors, (1416), 439 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1416 transitions. [2021-07-09 17:37:46,655 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1416 transitions. Word has length 16 [2021-07-09 17:37:46,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:46,655 INFO L482 AbstractCegarLoop]: Abstraction has 440 states and 1416 transitions. [2021-07-09 17:37:46,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1416 transitions. [2021-07-09 17:37:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:46,656 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:46,656 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:46,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 17:37:46,656 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1307197767, now seen corresponding path program 4 times [2021-07-09 17:37:46,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:46,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871744228] [2021-07-09 17:37:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:46,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:46,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871744228] [2021-07-09 17:37:46,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871744228] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:46,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:46,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:46,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673100881] [2021-07-09 17:37:46,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:46,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:46,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:46,818 INFO L87 Difference]: Start difference. First operand 440 states and 1416 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,075 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2021-07-09 17:37:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:47,095 INFO L93 Difference]: Finished difference Result 547 states and 1649 transitions. [2021-07-09 17:37:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:47,096 INFO L225 Difference]: With dead ends: 547 [2021-07-09 17:37:47,096 INFO L226 Difference]: Without dead ends: 514 [2021-07-09 17:37:47,097 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 318.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-07-09 17:37:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2021-07-09 17:37:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 3.214123006833713) internal successors, (1411), 439 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1411 transitions. [2021-07-09 17:37:47,103 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1411 transitions. Word has length 16 [2021-07-09 17:37:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:47,104 INFO L482 AbstractCegarLoop]: Abstraction has 440 states and 1411 transitions. [2021-07-09 17:37:47,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1411 transitions. [2021-07-09 17:37:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:47,104 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:47,105 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:47,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 17:37:47,105 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash 648487496, now seen corresponding path program 2 times [2021-07-09 17:37:47,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:47,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308037766] [2021-07-09 17:37:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:47,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:47,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308037766] [2021-07-09 17:37:47,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308037766] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:47,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:47,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:47,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142441533] [2021-07-09 17:37:47,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:47,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:47,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:47,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:47,171 INFO L87 Difference]: Start difference. First operand 440 states and 1411 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:47,245 INFO L93 Difference]: Finished difference Result 727 states and 2197 transitions. [2021-07-09 17:37:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:37:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:47,247 INFO L225 Difference]: With dead ends: 727 [2021-07-09 17:37:47,247 INFO L226 Difference]: Without dead ends: 679 [2021-07-09 17:37:47,247 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-07-09 17:37:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 430. [2021-07-09 17:37:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.191142191142191) internal successors, (1369), 429 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1369 transitions. [2021-07-09 17:37:47,255 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1369 transitions. Word has length 16 [2021-07-09 17:37:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:47,255 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1369 transitions. [2021-07-09 17:37:47,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1369 transitions. [2021-07-09 17:37:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:47,256 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:47,256 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:47,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 17:37:47,256 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:47,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:47,256 INFO L82 PathProgramCache]: Analyzing trace with hash 529800585, now seen corresponding path program 2 times [2021-07-09 17:37:47,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:47,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323473485] [2021-07-09 17:37:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:47,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:47,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323473485] [2021-07-09 17:37:47,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323473485] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:47,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:47,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:47,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458731341] [2021-07-09 17:37:47,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:47,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:47,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:47,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:47,485 INFO L87 Difference]: Start difference. First operand 430 states and 1369 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:47,708 INFO L93 Difference]: Finished difference Result 785 states and 2408 transitions. [2021-07-09 17:37:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 17:37:47,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:47,710 INFO L225 Difference]: With dead ends: 785 [2021-07-09 17:37:47,710 INFO L226 Difference]: Without dead ends: 737 [2021-07-09 17:37:47,710 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 278.2ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-07-09 17:37:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 409. [2021-07-09 17:37:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.2107843137254903) internal successors, (1310), 408 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1310 transitions. [2021-07-09 17:37:47,717 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1310 transitions. Word has length 16 [2021-07-09 17:37:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:47,718 INFO L482 AbstractCegarLoop]: Abstraction has 409 states and 1310 transitions. [2021-07-09 17:37:47,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1310 transitions. [2021-07-09 17:37:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:47,718 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:47,718 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:47,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 17:37:47,719 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:47,719 INFO L82 PathProgramCache]: Analyzing trace with hash 637834109, now seen corresponding path program 3 times [2021-07-09 17:37:47,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:47,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786762239] [2021-07-09 17:37:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:47,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:47,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786762239] [2021-07-09 17:37:47,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786762239] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:47,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:47,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:47,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490828484] [2021-07-09 17:37:47,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:47,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:47,870 INFO L87 Difference]: Start difference. First operand 409 states and 1310 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:48,045 INFO L93 Difference]: Finished difference Result 646 states and 1995 transitions. [2021-07-09 17:37:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:37:48,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:48,047 INFO L225 Difference]: With dead ends: 646 [2021-07-09 17:37:48,047 INFO L226 Difference]: Without dead ends: 606 [2021-07-09 17:37:48,047 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-07-09 17:37:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 396. [2021-07-09 17:37:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.2430379746835443) internal successors, (1281), 395 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1281 transitions. [2021-07-09 17:37:48,054 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1281 transitions. Word has length 16 [2021-07-09 17:37:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:48,055 INFO L482 AbstractCegarLoop]: Abstraction has 396 states and 1281 transitions. [2021-07-09 17:37:48,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,055 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1281 transitions. [2021-07-09 17:37:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:48,055 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:48,056 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:48,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-09 17:37:48,056 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 784334086, now seen corresponding path program 5 times [2021-07-09 17:37:48,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:48,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295704865] [2021-07-09 17:37:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:48,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:48,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295704865] [2021-07-09 17:37:48,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295704865] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:48,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:48,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:48,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853478287] [2021-07-09 17:37:48,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:48,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:48,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:48,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:48,160 INFO L87 Difference]: Start difference. First operand 396 states and 1281 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:48,360 INFO L93 Difference]: Finished difference Result 680 states and 2107 transitions. [2021-07-09 17:37:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:37:48,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:48,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:48,362 INFO L225 Difference]: With dead ends: 680 [2021-07-09 17:37:48,362 INFO L226 Difference]: Without dead ends: 657 [2021-07-09 17:37:48,362 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 181.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-07-09 17:37:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-07-09 17:37:48,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 392. [2021-07-09 17:37:48,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.2455242966751916) internal successors, (1269), 391 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1269 transitions. [2021-07-09 17:37:48,369 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1269 transitions. Word has length 16 [2021-07-09 17:37:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:48,369 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1269 transitions. [2021-07-09 17:37:48,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1269 transitions. [2021-07-09 17:37:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:48,370 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:48,370 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:48,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-09 17:37:48,370 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash 797847013, now seen corresponding path program 5 times [2021-07-09 17:37:48,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:48,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440695076] [2021-07-09 17:37:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:48,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:48,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440695076] [2021-07-09 17:37:48,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440695076] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:48,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:48,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:48,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081388836] [2021-07-09 17:37:48,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:48,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:48,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:48,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:48,550 INFO L87 Difference]: Start difference. First operand 392 states and 1269 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,850 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2021-07-09 17:37:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:48,881 INFO L93 Difference]: Finished difference Result 690 states and 2128 transitions. [2021-07-09 17:37:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 17:37:48,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:48,883 INFO L225 Difference]: With dead ends: 690 [2021-07-09 17:37:48,883 INFO L226 Difference]: Without dead ends: 663 [2021-07-09 17:37:48,883 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 347.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-07-09 17:37:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 392. [2021-07-09 17:37:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.2404092071611252) internal successors, (1267), 391 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1267 transitions. [2021-07-09 17:37:48,890 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1267 transitions. Word has length 16 [2021-07-09 17:37:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:48,890 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1267 transitions. [2021-07-09 17:37:48,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1267 transitions. [2021-07-09 17:37:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:48,891 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:48,891 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:48,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-09 17:37:48,891 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:48,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1214532848, now seen corresponding path program 6 times [2021-07-09 17:37:48,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:48,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009364858] [2021-07-09 17:37:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:48,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:48,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009364858] [2021-07-09 17:37:48,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009364858] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:48,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:48,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:48,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273204139] [2021-07-09 17:37:48,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:48,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:48,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:48,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:48,959 INFO L87 Difference]: Start difference. First operand 392 states and 1267 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:49,032 INFO L93 Difference]: Finished difference Result 595 states and 1821 transitions. [2021-07-09 17:37:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:49,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:49,033 INFO L225 Difference]: With dead ends: 595 [2021-07-09 17:37:49,033 INFO L226 Difference]: Without dead ends: 572 [2021-07-09 17:37:49,033 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-07-09 17:37:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 392. [2021-07-09 17:37:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.2404092071611252) internal successors, (1267), 391 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1267 transitions. [2021-07-09 17:37:49,040 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1267 transitions. Word has length 16 [2021-07-09 17:37:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:49,040 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1267 transitions. [2021-07-09 17:37:49,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1267 transitions. [2021-07-09 17:37:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-09 17:37:49,041 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:49,041 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:49,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-09 17:37:49,041 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:49,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:49,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1154290151, now seen corresponding path program 6 times [2021-07-09 17:37:49,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:49,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854840127] [2021-07-09 17:37:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 17:37:49,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:49,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854840127] [2021-07-09 17:37:49,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854840127] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:49,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:49,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 17:37:49,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133205634] [2021-07-09 17:37:49,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 17:37:49,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:49,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 17:37:49,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:49,412 INFO L87 Difference]: Start difference. First operand 392 states and 1267 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:49,594 INFO L93 Difference]: Finished difference Result 595 states and 1811 transitions. [2021-07-09 17:37:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:49,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-07-09 17:37:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:49,595 INFO L225 Difference]: With dead ends: 595 [2021-07-09 17:37:49,595 INFO L226 Difference]: Without dead ends: 562 [2021-07-09 17:37:49,595 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 402.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-09 17:37:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-07-09 17:37:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 392. [2021-07-09 17:37:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.235294117647059) internal successors, (1265), 391 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1265 transitions. [2021-07-09 17:37:49,601 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1265 transitions. Word has length 16 [2021-07-09 17:37:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:49,602 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1265 transitions. [2021-07-09 17:37:49,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1265 transitions. [2021-07-09 17:37:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:49,602 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:49,602 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:49,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-09 17:37:49,603 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1318202505, now seen corresponding path program 1 times [2021-07-09 17:37:49,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:49,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410865724] [2021-07-09 17:37:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:49,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:49,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410865724] [2021-07-09 17:37:49,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410865724] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:49,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:49,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:49,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577735587] [2021-07-09 17:37:49,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:49,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:49,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:49,619 INFO L87 Difference]: Start difference. First operand 392 states and 1265 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:49,653 INFO L93 Difference]: Finished difference Result 566 states and 1698 transitions. [2021-07-09 17:37:49,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:49,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:49,654 INFO L225 Difference]: With dead ends: 566 [2021-07-09 17:37:49,654 INFO L226 Difference]: Without dead ends: 566 [2021-07-09 17:37:49,654 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-07-09 17:37:49,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 420. [2021-07-09 17:37:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.252983293556086) internal successors, (1363), 419 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1363 transitions. [2021-07-09 17:37:49,661 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1363 transitions. Word has length 18 [2021-07-09 17:37:49,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:49,661 INFO L482 AbstractCegarLoop]: Abstraction has 420 states and 1363 transitions. [2021-07-09 17:37:49,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1363 transitions. [2021-07-09 17:37:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:49,662 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:49,662 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:49,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-09 17:37:49,662 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:49,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1664376435, now seen corresponding path program 2 times [2021-07-09 17:37:49,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:49,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233914737] [2021-07-09 17:37:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:49,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:49,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233914737] [2021-07-09 17:37:49,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233914737] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:49,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:49,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:49,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164000320] [2021-07-09 17:37:49,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:49,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:49,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:49,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:49,686 INFO L87 Difference]: Start difference. First operand 420 states and 1363 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:49,723 INFO L93 Difference]: Finished difference Result 594 states and 1770 transitions. [2021-07-09 17:37:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:49,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:49,724 INFO L225 Difference]: With dead ends: 594 [2021-07-09 17:37:49,725 INFO L226 Difference]: Without dead ends: 586 [2021-07-09 17:37:49,725 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-07-09 17:37:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 420. [2021-07-09 17:37:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.243436754176611) internal successors, (1359), 419 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1359 transitions. [2021-07-09 17:37:49,731 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1359 transitions. Word has length 18 [2021-07-09 17:37:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:49,731 INFO L482 AbstractCegarLoop]: Abstraction has 420 states and 1359 transitions. [2021-07-09 17:37:49,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1359 transitions. [2021-07-09 17:37:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:49,732 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:49,732 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:49,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-09 17:37:49,733 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:49,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1681246645, now seen corresponding path program 1 times [2021-07-09 17:37:49,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:49,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228608341] [2021-07-09 17:37:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:49,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:49,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228608341] [2021-07-09 17:37:49,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228608341] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:49,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:49,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:49,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247800321] [2021-07-09 17:37:49,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:49,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:49,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:49,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:49,783 INFO L87 Difference]: Start difference. First operand 420 states and 1359 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:49,856 INFO L93 Difference]: Finished difference Result 602 states and 1832 transitions. [2021-07-09 17:37:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:49,857 INFO L225 Difference]: With dead ends: 602 [2021-07-09 17:37:49,857 INFO L226 Difference]: Without dead ends: 602 [2021-07-09 17:37:49,857 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-07-09 17:37:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 457. [2021-07-09 17:37:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 3.2214912280701755) internal successors, (1469), 456 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1469 transitions. [2021-07-09 17:37:49,865 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1469 transitions. Word has length 18 [2021-07-09 17:37:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:49,865 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1469 transitions. [2021-07-09 17:37:49,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1469 transitions. [2021-07-09 17:37:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:49,866 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:49,866 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:49,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-09 17:37:49,866 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:49,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1406905333, now seen corresponding path program 2 times [2021-07-09 17:37:49,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:49,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516103085] [2021-07-09 17:37:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:49,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:49,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516103085] [2021-07-09 17:37:49,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516103085] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:49,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:49,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:49,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988946179] [2021-07-09 17:37:49,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:49,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:49,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:49,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:49,917 INFO L87 Difference]: Start difference. First operand 457 states and 1469 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:49,982 INFO L93 Difference]: Finished difference Result 590 states and 1764 transitions. [2021-07-09 17:37:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:49,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:49,984 INFO L225 Difference]: With dead ends: 590 [2021-07-09 17:37:49,984 INFO L226 Difference]: Without dead ends: 582 [2021-07-09 17:37:49,984 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-07-09 17:37:49,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 457. [2021-07-09 17:37:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 3.212719298245614) internal successors, (1465), 456 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1465 transitions. [2021-07-09 17:37:49,991 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 1465 transitions. Word has length 18 [2021-07-09 17:37:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:49,991 INFO L482 AbstractCegarLoop]: Abstraction has 457 states and 1465 transitions. [2021-07-09 17:37:49,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 1465 transitions. [2021-07-09 17:37:49,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:49,992 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:49,992 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:49,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-09 17:37:49,992 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:49,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash 506049385, now seen corresponding path program 1 times [2021-07-09 17:37:49,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:49,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681796555] [2021-07-09 17:37:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681796555] [2021-07-09 17:37:50,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681796555] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:50,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477316625] [2021-07-09 17:37:50,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:50,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:50,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,044 INFO L87 Difference]: Start difference. First operand 457 states and 1465 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,120 INFO L93 Difference]: Finished difference Result 537 states and 1634 transitions. [2021-07-09 17:37:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,121 INFO L225 Difference]: With dead ends: 537 [2021-07-09 17:37:50,121 INFO L226 Difference]: Without dead ends: 525 [2021-07-09 17:37:50,121 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-07-09 17:37:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 453. [2021-07-09 17:37:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 3.2234513274336285) internal successors, (1457), 452 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 1457 transitions. [2021-07-09 17:37:50,128 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 1457 transitions. Word has length 18 [2021-07-09 17:37:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,128 INFO L482 AbstractCegarLoop]: Abstraction has 453 states and 1457 transitions. [2021-07-09 17:37:50,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1457 transitions. [2021-07-09 17:37:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,129 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,129 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-09 17:37:50,129 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1415879781, now seen corresponding path program 3 times [2021-07-09 17:37:50,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982898923] [2021-07-09 17:37:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982898923] [2021-07-09 17:37:50,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982898923] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:50,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342630973] [2021-07-09 17:37:50,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:50,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:50,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:50,146 INFO L87 Difference]: Start difference. First operand 453 states and 1457 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,181 INFO L93 Difference]: Finished difference Result 549 states and 1641 transitions. [2021-07-09 17:37:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:50,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,182 INFO L225 Difference]: With dead ends: 549 [2021-07-09 17:37:50,182 INFO L226 Difference]: Without dead ends: 549 [2021-07-09 17:37:50,182 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-07-09 17:37:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 396. [2021-07-09 17:37:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.1544303797468354) internal successors, (1246), 395 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1246 transitions. [2021-07-09 17:37:50,189 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1246 transitions. Word has length 18 [2021-07-09 17:37:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,189 INFO L482 AbstractCegarLoop]: Abstraction has 396 states and 1246 transitions. [2021-07-09 17:37:50,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1246 transitions. [2021-07-09 17:37:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,189 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,189 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-09 17:37:50,190 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1243069021, now seen corresponding path program 1 times [2021-07-09 17:37:50,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326379819] [2021-07-09 17:37:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326379819] [2021-07-09 17:37:50,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326379819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:50,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653161219] [2021-07-09 17:37:50,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:50,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:50,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:50,205 INFO L87 Difference]: Start difference. First operand 396 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,236 INFO L93 Difference]: Finished difference Result 442 states and 1323 transitions. [2021-07-09 17:37:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 17:37:50,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,237 INFO L225 Difference]: With dead ends: 442 [2021-07-09 17:37:50,237 INFO L226 Difference]: Without dead ends: 413 [2021-07-09 17:37:50,237 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-07-09 17:37:50,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 396. [2021-07-09 17:37:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.118987341772152) internal successors, (1232), 395 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1232 transitions. [2021-07-09 17:37:50,243 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1232 transitions. Word has length 18 [2021-07-09 17:37:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,243 INFO L482 AbstractCegarLoop]: Abstraction has 396 states and 1232 transitions. [2021-07-09 17:37:50,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1232 transitions. [2021-07-09 17:37:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,244 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,244 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-09 17:37:50,244 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1059721977, now seen corresponding path program 3 times [2021-07-09 17:37:50,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306100064] [2021-07-09 17:37:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306100064] [2021-07-09 17:37:50,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306100064] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:50,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363994515] [2021-07-09 17:37:50,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:50,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:50,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:50,284 INFO L87 Difference]: Start difference. First operand 396 states and 1232 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,344 INFO L93 Difference]: Finished difference Result 482 states and 1411 transitions. [2021-07-09 17:37:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,356 INFO L225 Difference]: With dead ends: 482 [2021-07-09 17:37:50,356 INFO L226 Difference]: Without dead ends: 482 [2021-07-09 17:37:50,357 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-07-09 17:37:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 359. [2021-07-09 17:37:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.0754189944134076) internal successors, (1101), 358 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1101 transitions. [2021-07-09 17:37:50,362 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1101 transitions. Word has length 18 [2021-07-09 17:37:50,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,362 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1101 transitions. [2021-07-09 17:37:50,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,362 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1101 transitions. [2021-07-09 17:37:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,363 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,363 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-09 17:37:50,363 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,364 INFO L82 PathProgramCache]: Analyzing trace with hash -197121861, now seen corresponding path program 2 times [2021-07-09 17:37:50,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302514794] [2021-07-09 17:37:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302514794] [2021-07-09 17:37:50,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302514794] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:50,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829994748] [2021-07-09 17:37:50,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:50,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:50,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,429 INFO L87 Difference]: Start difference. First operand 359 states and 1101 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,487 INFO L93 Difference]: Finished difference Result 467 states and 1366 transitions. [2021-07-09 17:37:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:50,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,489 INFO L225 Difference]: With dead ends: 467 [2021-07-09 17:37:50,489 INFO L226 Difference]: Without dead ends: 467 [2021-07-09 17:37:50,489 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-07-09 17:37:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 379. [2021-07-09 17:37:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.0714285714285716) internal successors, (1161), 378 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1161 transitions. [2021-07-09 17:37:50,495 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1161 transitions. Word has length 18 [2021-07-09 17:37:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,496 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1161 transitions. [2021-07-09 17:37:50,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1161 transitions. [2021-07-09 17:37:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,497 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,497 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-09 17:37:50,497 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1939653789, now seen corresponding path program 3 times [2021-07-09 17:37:50,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135182770] [2021-07-09 17:37:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135182770] [2021-07-09 17:37:50,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135182770] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:50,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342343302] [2021-07-09 17:37:50,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:50,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:50,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:50,547 INFO L87 Difference]: Start difference. First operand 379 states and 1161 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,611 INFO L93 Difference]: Finished difference Result 504 states and 1436 transitions. [2021-07-09 17:37:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,613 INFO L225 Difference]: With dead ends: 504 [2021-07-09 17:37:50,613 INFO L226 Difference]: Without dead ends: 496 [2021-07-09 17:37:50,613 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-07-09 17:37:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 379. [2021-07-09 17:37:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.060846560846561) internal successors, (1157), 378 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1157 transitions. [2021-07-09 17:37:50,618 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1157 transitions. Word has length 18 [2021-07-09 17:37:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,619 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1157 transitions. [2021-07-09 17:37:50,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1157 transitions. [2021-07-09 17:37:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,619 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,619 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-09 17:37:50,620 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1583210651, now seen corresponding path program 4 times [2021-07-09 17:37:50,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146663740] [2021-07-09 17:37:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146663740] [2021-07-09 17:37:50,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146663740] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:50,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608327127] [2021-07-09 17:37:50,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:50,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:50,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,691 INFO L87 Difference]: Start difference. First operand 379 states and 1157 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,737 INFO L93 Difference]: Finished difference Result 441 states and 1293 transitions. [2021-07-09 17:37:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:50,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,738 INFO L225 Difference]: With dead ends: 441 [2021-07-09 17:37:50,738 INFO L226 Difference]: Without dead ends: 441 [2021-07-09 17:37:50,739 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-07-09 17:37:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 359. [2021-07-09 17:37:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.0083798882681565) internal successors, (1077), 358 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1077 transitions. [2021-07-09 17:37:50,744 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1077 transitions. Word has length 18 [2021-07-09 17:37:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,744 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1077 transitions. [2021-07-09 17:37:50,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1077 transitions. [2021-07-09 17:37:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,744 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,745 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-09 17:37:50,745 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2015137509, now seen corresponding path program 4 times [2021-07-09 17:37:50,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625289923] [2021-07-09 17:37:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625289923] [2021-07-09 17:37:50,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625289923] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:50,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159765719] [2021-07-09 17:37:50,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:50,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:50,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,777 INFO L87 Difference]: Start difference. First operand 359 states and 1077 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,801 INFO L93 Difference]: Finished difference Result 439 states and 1246 transitions. [2021-07-09 17:37:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 17:37:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,802 INFO L225 Difference]: With dead ends: 439 [2021-07-09 17:37:50,802 INFO L226 Difference]: Without dead ends: 431 [2021-07-09 17:37:50,802 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-07-09 17:37:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 359. [2021-07-09 17:37:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.0027932960893855) internal successors, (1075), 358 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1075 transitions. [2021-07-09 17:37:50,807 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1075 transitions. Word has length 18 [2021-07-09 17:37:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,807 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1075 transitions. [2021-07-09 17:37:50,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1075 transitions. [2021-07-09 17:37:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,808 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,808 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-09 17:37:50,808 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,809 INFO L82 PathProgramCache]: Analyzing trace with hash 325544227, now seen corresponding path program 4 times [2021-07-09 17:37:50,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598233] [2021-07-09 17:37:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598233] [2021-07-09 17:37:50,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598233] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 17:37:50,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33701656] [2021-07-09 17:37:50,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 17:37:50,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 17:37:50,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,865 INFO L87 Difference]: Start difference. First operand 359 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,930 INFO L93 Difference]: Finished difference Result 384 states and 1113 transitions. [2021-07-09 17:37:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 17:37:50,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,931 INFO L225 Difference]: With dead ends: 384 [2021-07-09 17:37:50,931 INFO L226 Difference]: Without dead ends: 376 [2021-07-09 17:37:50,932 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-09 17:37:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-07-09 17:37:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 359. [2021-07-09 17:37:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.9972067039106145) internal successors, (1073), 358 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1073 transitions. [2021-07-09 17:37:50,936 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1073 transitions. Word has length 18 [2021-07-09 17:37:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,936 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1073 transitions. [2021-07-09 17:37:50,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,936 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1073 transitions. [2021-07-09 17:37:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 17:37:50,937 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,937 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-09 17:37:50,937 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash 724624817, now seen corresponding path program 5 times [2021-07-09 17:37:50,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773225561] [2021-07-09 17:37:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-09 17:37:50,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:50,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773225561] [2021-07-09 17:37:50,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773225561] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:37:50,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:37:50,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 17:37:50,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720412914] [2021-07-09 17:37:50,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 17:37:50,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:50,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 17:37:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 17:37:50,952 INFO L87 Difference]: Start difference. First operand 359 states and 1073 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:50,977 INFO L93 Difference]: Finished difference Result 386 states and 1114 transitions. [2021-07-09 17:37:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 17:37:50,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-07-09 17:37:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:50,979 INFO L225 Difference]: With dead ends: 386 [2021-07-09 17:37:50,979 INFO L226 Difference]: Without dead ends: 374 [2021-07-09 17:37:50,979 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 17:37:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-07-09 17:37:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 357. [2021-07-09 17:37:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 3.002808988764045) internal successors, (1069), 356 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 1069 transitions. [2021-07-09 17:37:50,983 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 1069 transitions. Word has length 18 [2021-07-09 17:37:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:50,984 INFO L482 AbstractCegarLoop]: Abstraction has 357 states and 1069 transitions. [2021-07-09 17:37:50,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 1069 transitions. [2021-07-09 17:37:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:37:50,984 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:50,984 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:50,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-09 17:37:50,984 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:50,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:50,985 INFO L82 PathProgramCache]: Analyzing trace with hash -280993702, now seen corresponding path program 1 times [2021-07-09 17:37:50,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:50,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567528760] [2021-07-09 17:37:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:51,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:51,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567528760] [2021-07-09 17:37:51,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567528760] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:37:51,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655873783] [2021-07-09 17:37:51,417 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 [2021-07-09 17:37:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:51,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-09 17:37:51,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:37:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:52,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655873783] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:37:52,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:37:52,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:37:52,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729338193] [2021-07-09 17:37:52,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:37:52,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:52,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:37:52,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:37:52,436 INFO L87 Difference]: Start difference. First operand 357 states and 1069 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:53,012 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-07-09 17:37:53,200 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-07-09 17:37:53,421 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-07-09 17:37:53,714 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2021-07-09 17:37:53,870 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-09 17:37:54,189 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-07-09 17:37:54,337 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-07-09 17:37:54,488 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-07-09 17:37:54,657 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2021-07-09 17:37:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:54,701 INFO L93 Difference]: Finished difference Result 577 states and 1690 transitions. [2021-07-09 17:37:54,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-09 17:37:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:37:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:54,703 INFO L225 Difference]: With dead ends: 577 [2021-07-09 17:37:54,703 INFO L226 Difference]: Without dead ends: 562 [2021-07-09 17:37:54,703 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2858.6ms TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2021-07-09 17:37:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-07-09 17:37:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 376. [2021-07-09 17:37:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 2.984) internal successors, (1119), 375 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1119 transitions. [2021-07-09 17:37:54,710 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1119 transitions. Word has length 20 [2021-07-09 17:37:54,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:54,710 INFO L482 AbstractCegarLoop]: Abstraction has 376 states and 1119 transitions. [2021-07-09 17:37:54,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:54,710 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1119 transitions. [2021-07-09 17:37:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:37:54,711 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:54,711 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:54,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-07-09 17:37:54,925 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2131599896, now seen corresponding path program 2 times [2021-07-09 17:37:54,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:54,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800479925] [2021-07-09 17:37:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:55,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:55,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800479925] [2021-07-09 17:37:55,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800479925] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:37:55,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429123592] [2021-07-09 17:37:55,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:37:55,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:37:55,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:37:55,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:37:55,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:37:55,802 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-09 17:37:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:56,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429123592] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:37:56,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:37:56,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:37:56,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703779600] [2021-07-09 17:37:56,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:37:56,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:56,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:37:56,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:37:56,027 INFO L87 Difference]: Start difference. First operand 376 states and 1119 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:56,541 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2021-07-09 17:37:56,727 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-07-09 17:37:57,256 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-07-09 17:37:57,549 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2021-07-09 17:37:57,866 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-07-09 17:37:58,008 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-07-09 17:37:58,219 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-09 17:37:58,352 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-07-09 17:37:58,605 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-07-09 17:37:58,746 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-07-09 17:37:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:37:58,806 INFO L93 Difference]: Finished difference Result 661 states and 1936 transitions. [2021-07-09 17:37:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 17:37:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:37:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:37:58,808 INFO L225 Difference]: With dead ends: 661 [2021-07-09 17:37:58,808 INFO L226 Difference]: Without dead ends: 646 [2021-07-09 17:37:58,809 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 3021.4ms TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 17:37:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-07-09 17:37:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 393. [2021-07-09 17:37:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.0280612244897958) internal successors, (1187), 392 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1187 transitions. [2021-07-09 17:37:58,815 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1187 transitions. Word has length 20 [2021-07-09 17:37:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:37:58,815 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 1187 transitions. [2021-07-09 17:37:58,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:37:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1187 transitions. [2021-07-09 17:37:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:37:58,816 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:37:58,816 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:37:59,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:37:59,029 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:37:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:37:59,029 INFO L82 PathProgramCache]: Analyzing trace with hash 695728536, now seen corresponding path program 3 times [2021-07-09 17:37:59,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:37:59,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724791250] [2021-07-09 17:37:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:37:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:37:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:59,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:37:59,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724791250] [2021-07-09 17:37:59,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724791250] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:37:59,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960187563] [2021-07-09 17:37:59,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:37:59,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-07-09 17:37:59,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:37:59,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:37:59,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:37:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:37:59,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960187563] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:37:59,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:37:59,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:37:59,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901421295] [2021-07-09 17:37:59,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:37:59,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:37:59,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:37:59,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:37:59,897 INFO L87 Difference]: Start difference. First operand 393 states and 1187 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:00,579 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-07-09 17:38:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:00,613 INFO L93 Difference]: Finished difference Result 616 states and 1834 transitions. [2021-07-09 17:38:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-07-09 17:38:00,613 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:38:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:00,615 INFO L225 Difference]: With dead ends: 616 [2021-07-09 17:38:00,615 INFO L226 Difference]: Without dead ends: 601 [2021-07-09 17:38:00,615 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1037.8ms TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-07-09 17:38:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-07-09 17:38:00,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 402. [2021-07-09 17:38:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.027431421446384) internal successors, (1214), 401 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1214 transitions. [2021-07-09 17:38:00,621 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1214 transitions. Word has length 20 [2021-07-09 17:38:00,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:00,621 INFO L482 AbstractCegarLoop]: Abstraction has 402 states and 1214 transitions. [2021-07-09 17:38:00,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1214 transitions. [2021-07-09 17:38:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:00,622 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:00,622 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:00,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:00,837 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2000569288, now seen corresponding path program 4 times [2021-07-09 17:38:00,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:00,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183747038] [2021-07-09 17:38:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:01,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:01,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183747038] [2021-07-09 17:38:01,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183747038] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:01,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265766130] [2021-07-09 17:38:01,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:01,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 17:38:01,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:01,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:01,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:01,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265766130] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:01,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:01,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:38:01,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136338961] [2021-07-09 17:38:01,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:38:01,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:38:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:38:01,655 INFO L87 Difference]: Start difference. First operand 402 states and 1214 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:01,951 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-09 17:38:02,385 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2021-07-09 17:38:02,670 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-07-09 17:38:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:02,697 INFO L93 Difference]: Finished difference Result 652 states and 1931 transitions. [2021-07-09 17:38:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-09 17:38:02,698 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:38:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:02,699 INFO L225 Difference]: With dead ends: 652 [2021-07-09 17:38:02,699 INFO L226 Difference]: Without dead ends: 637 [2021-07-09 17:38:02,699 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1356.9ms TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-07-09 17:38:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-07-09 17:38:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 402. [2021-07-09 17:38:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.027431421446384) internal successors, (1214), 401 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1214 transitions. [2021-07-09 17:38:02,705 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1214 transitions. Word has length 20 [2021-07-09 17:38:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:02,706 INFO L482 AbstractCegarLoop]: Abstraction has 402 states and 1214 transitions. [2021-07-09 17:38:02,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1214 transitions. [2021-07-09 17:38:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:02,706 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:02,706 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:02,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:02,909 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:02,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:02,909 INFO L82 PathProgramCache]: Analyzing trace with hash -616411988, now seen corresponding path program 5 times [2021-07-09 17:38:02,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:02,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587779000] [2021-07-09 17:38:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:03,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:03,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587779000] [2021-07-09 17:38:03,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587779000] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:03,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137909103] [2021-07-09 17:38:03,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:03,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:38:03,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:03,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:03,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:03,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137909103] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:03,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:03,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:03,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701317317] [2021-07-09 17:38:03,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:03,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:03,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:03,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:03,937 INFO L87 Difference]: Start difference. First operand 402 states and 1214 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:04,070 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-07-09 17:38:04,399 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2021-07-09 17:38:04,655 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-07-09 17:38:04,799 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2021-07-09 17:38:05,179 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2021-07-09 17:38:05,418 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-09 17:38:05,622 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-07-09 17:38:05,877 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2021-07-09 17:38:06,014 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-07-09 17:38:06,242 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-07-09 17:38:06,502 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-07-09 17:38:06,698 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-07-09 17:38:07,025 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2021-07-09 17:38:07,253 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2021-07-09 17:38:07,565 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2021-07-09 17:38:07,785 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2021-07-09 17:38:07,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:07,836 INFO L93 Difference]: Finished difference Result 727 states and 2144 transitions. [2021-07-09 17:38:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-09 17:38:07,836 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:07,837 INFO L225 Difference]: With dead ends: 727 [2021-07-09 17:38:07,837 INFO L226 Difference]: Without dead ends: 712 [2021-07-09 17:38:07,838 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4101.7ms TimeCoverageRelationStatistics Valid=339, Invalid=1383, Unknown=0, NotChecked=0, Total=1722 [2021-07-09 17:38:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-07-09 17:38:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 411. [2021-07-09 17:38:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 3.026829268292683) internal successors, (1241), 410 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 1241 transitions. [2021-07-09 17:38:07,844 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 1241 transitions. Word has length 20 [2021-07-09 17:38:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:07,844 INFO L482 AbstractCegarLoop]: Abstraction has 411 states and 1241 transitions. [2021-07-09 17:38:07,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 1241 transitions. [2021-07-09 17:38:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:07,845 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:07,845 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:08,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:08,057 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:08,057 INFO L82 PathProgramCache]: Analyzing trace with hash -2111156678, now seen corresponding path program 6 times [2021-07-09 17:38:08,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:08,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876221638] [2021-07-09 17:38:08,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:08,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:08,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876221638] [2021-07-09 17:38:08,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876221638] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:08,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712903696] [2021-07-09 17:38:08,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:08,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-07-09 17:38:08,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:08,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:08,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:08,844 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-07-09 17:38:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:09,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712903696] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:09,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:09,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:09,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797483129] [2021-07-09 17:38:09,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:09,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:09,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:09,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:09,060 INFO L87 Difference]: Start difference. First operand 411 states and 1241 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:09,746 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-09 17:38:10,143 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-09 17:38:10,279 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-07-09 17:38:10,462 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-07-09 17:38:10,775 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-07-09 17:38:10,980 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2021-07-09 17:38:11,304 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2021-07-09 17:38:11,484 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-07-09 17:38:11,756 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-09 17:38:12,179 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-09 17:38:12,443 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-07-09 17:38:12,596 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-09 17:38:12,723 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-07-09 17:38:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:12,770 INFO L93 Difference]: Finished difference Result 672 states and 1985 transitions. [2021-07-09 17:38:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-09 17:38:12,771 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:12,772 INFO L225 Difference]: With dead ends: 672 [2021-07-09 17:38:12,772 INFO L226 Difference]: Without dead ends: 657 [2021-07-09 17:38:12,773 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 3901.5ms TimeCoverageRelationStatistics Valid=316, Invalid=1490, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:38:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-07-09 17:38:12,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 426. [2021-07-09 17:38:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.0376470588235294) internal successors, (1291), 425 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1291 transitions. [2021-07-09 17:38:12,779 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1291 transitions. Word has length 20 [2021-07-09 17:38:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:12,779 INFO L482 AbstractCegarLoop]: Abstraction has 426 states and 1291 transitions. [2021-07-09 17:38:12,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1291 transitions. [2021-07-09 17:38:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:12,780 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:12,780 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:12,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:12,997 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:12,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:12,997 INFO L82 PathProgramCache]: Analyzing trace with hash 301436920, now seen corresponding path program 7 times [2021-07-09 17:38:12,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:12,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178915290] [2021-07-09 17:38:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:13,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:13,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178915290] [2021-07-09 17:38:13,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178915290] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:13,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267124335] [2021-07-09 17:38:13,462 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:13,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-09 17:38:13,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:14,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267124335] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:14,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:14,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:38:14,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293754144] [2021-07-09 17:38:14,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:38:14,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:38:14,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:38:14,204 INFO L87 Difference]: Start difference. First operand 426 states and 1291 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:14,699 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-09 17:38:15,122 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-09 17:38:15,304 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-07-09 17:38:15,596 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-07-09 17:38:15,780 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2021-07-09 17:38:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:15,794 INFO L93 Difference]: Finished difference Result 669 states and 1939 transitions. [2021-07-09 17:38:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 17:38:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:38:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:15,796 INFO L225 Difference]: With dead ends: 669 [2021-07-09 17:38:15,796 INFO L226 Difference]: Without dead ends: 639 [2021-07-09 17:38:15,797 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2232.4ms TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2021-07-09 17:38:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-07-09 17:38:15,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 432. [2021-07-09 17:38:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.0301624129930396) internal successors, (1306), 431 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1306 transitions. [2021-07-09 17:38:15,803 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1306 transitions. Word has length 20 [2021-07-09 17:38:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:15,803 INFO L482 AbstractCegarLoop]: Abstraction has 432 states and 1306 transitions. [2021-07-09 17:38:15,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1306 transitions. [2021-07-09 17:38:15,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:15,804 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:15,804 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:16,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:16,017 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:16,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1134434440, now seen corresponding path program 8 times [2021-07-09 17:38:16,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:16,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870045240] [2021-07-09 17:38:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:16,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:16,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870045240] [2021-07-09 17:38:16,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870045240] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:16,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704220543] [2021-07-09 17:38:16,347 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:16,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:38:16,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:16,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:16,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:16,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704220543] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:16,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:16,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:38:16,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611051592] [2021-07-09 17:38:16,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:38:16,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:16,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:38:16,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:38:16,946 INFO L87 Difference]: Start difference. First operand 432 states and 1306 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:17,277 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-07-09 17:38:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:17,501 INFO L93 Difference]: Finished difference Result 630 states and 1879 transitions. [2021-07-09 17:38:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:38:17,502 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:38:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:17,503 INFO L225 Difference]: With dead ends: 630 [2021-07-09 17:38:17,503 INFO L226 Difference]: Without dead ends: 615 [2021-07-09 17:38:17,503 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1041.8ms TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2021-07-09 17:38:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-07-09 17:38:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 435. [2021-07-09 17:38:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.0368663594470044) internal successors, (1318), 434 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1318 transitions. [2021-07-09 17:38:17,511 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1318 transitions. Word has length 20 [2021-07-09 17:38:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:17,511 INFO L482 AbstractCegarLoop]: Abstraction has 435 states and 1318 transitions. [2021-07-09 17:38:17,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1318 transitions. [2021-07-09 17:38:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:17,512 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:17,512 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:17,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2021-07-09 17:38:17,729 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:17,729 INFO L82 PathProgramCache]: Analyzing trace with hash 464235032, now seen corresponding path program 9 times [2021-07-09 17:38:17,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:17,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752040793] [2021-07-09 17:38:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:18,042 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2021-07-09 17:38:18,163 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2021-07-09 17:38:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:18,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:18,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752040793] [2021-07-09 17:38:18,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752040793] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:18,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147517623] [2021-07-09 17:38:18,389 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:18,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-07-09 17:38:18,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:18,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:18,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:18,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147517623] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:18,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:18,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:18,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099973751] [2021-07-09 17:38:18,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:18,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:18,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:18,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:18,990 INFO L87 Difference]: Start difference. First operand 435 states and 1318 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:19,816 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-09 17:38:20,065 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2021-07-09 17:38:20,218 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2021-07-09 17:38:20,364 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-07-09 17:38:20,517 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-09 17:38:20,694 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2021-07-09 17:38:20,906 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2021-07-09 17:38:21,094 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-07-09 17:38:21,248 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2021-07-09 17:38:21,416 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-09 17:38:21,564 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2021-07-09 17:38:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:21,605 INFO L93 Difference]: Finished difference Result 661 states and 1963 transitions. [2021-07-09 17:38:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 17:38:21,606 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:21,607 INFO L225 Difference]: With dead ends: 661 [2021-07-09 17:38:21,607 INFO L226 Difference]: Without dead ends: 646 [2021-07-09 17:38:21,607 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3238.3ms TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2021-07-09 17:38:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-07-09 17:38:21,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 430. [2021-07-09 17:38:21,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.0326340326340326) internal successors, (1301), 429 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1301 transitions. [2021-07-09 17:38:21,613 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1301 transitions. Word has length 20 [2021-07-09 17:38:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:21,613 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1301 transitions. [2021-07-09 17:38:21,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1301 transitions. [2021-07-09 17:38:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:21,614 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:21,614 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:21,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:21,833 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash 812620716, now seen corresponding path program 10 times [2021-07-09 17:38:21,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:21,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670903937] [2021-07-09 17:38:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:22,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:22,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670903937] [2021-07-09 17:38:22,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670903937] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:22,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145718085] [2021-07-09 17:38:22,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:22,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 17:38:22,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:22,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-09 17:38:22,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:22,477 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-07-09 17:38:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:22,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145718085] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:22,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:22,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:22,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397452418] [2021-07-09 17:38:22,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:22,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:22,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:22,744 INFO L87 Difference]: Start difference. First operand 430 states and 1301 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:23,373 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-07-09 17:38:23,575 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-07-09 17:38:23,801 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-07-09 17:38:23,973 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-07-09 17:38:24,122 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-09 17:38:24,313 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-07-09 17:38:24,494 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-07-09 17:38:24,669 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-07-09 17:38:24,934 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2021-07-09 17:38:25,199 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2021-07-09 17:38:25,433 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2021-07-09 17:38:25,676 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-07-09 17:38:25,996 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:38:26,226 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2021-07-09 17:38:26,533 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2021-07-09 17:38:26,913 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2021-07-09 17:38:27,201 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2021-07-09 17:38:27,574 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2021-07-09 17:38:27,932 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-07-09 17:38:28,223 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2021-07-09 17:38:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:28,312 INFO L93 Difference]: Finished difference Result 840 states and 2464 transitions. [2021-07-09 17:38:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-09 17:38:28,313 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:28,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:28,317 INFO L225 Difference]: With dead ends: 840 [2021-07-09 17:38:28,317 INFO L226 Difference]: Without dead ends: 795 [2021-07-09 17:38:28,318 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 5635.0ms TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:38:28,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-07-09 17:38:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 475. [2021-07-09 17:38:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 3.0274261603375527) internal successors, (1435), 474 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1435 transitions. [2021-07-09 17:38:28,325 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1435 transitions. Word has length 20 [2021-07-09 17:38:28,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:28,325 INFO L482 AbstractCegarLoop]: Abstraction has 475 states and 1435 transitions. [2021-07-09 17:38:28,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:28,325 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1435 transitions. [2021-07-09 17:38:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:28,326 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:28,326 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:28,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:28,543 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:28,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:28,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1379795916, now seen corresponding path program 11 times [2021-07-09 17:38:28,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:28,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988613196] [2021-07-09 17:38:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:28,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:28,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988613196] [2021-07-09 17:38:28,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988613196] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:28,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829287219] [2021-07-09 17:38:28,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:28,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:38:28,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:28,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:28,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:29,093 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-07-09 17:38:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:29,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829287219] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:29,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:29,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:38:29,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635524687] [2021-07-09 17:38:29,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:38:29,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:29,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:38:29,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:38:29,417 INFO L87 Difference]: Start difference. First operand 475 states and 1435 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:30,125 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-07-09 17:38:30,355 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-07-09 17:38:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:30,388 INFO L93 Difference]: Finished difference Result 736 states and 2173 transitions. [2021-07-09 17:38:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:38:30,388 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:38:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:30,389 INFO L225 Difference]: With dead ends: 736 [2021-07-09 17:38:30,389 INFO L226 Difference]: Without dead ends: 721 [2021-07-09 17:38:30,389 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1303.9ms TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-07-09 17:38:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-07-09 17:38:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 475. [2021-07-09 17:38:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 3.0274261603375527) internal successors, (1435), 474 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1435 transitions. [2021-07-09 17:38:30,396 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1435 transitions. Word has length 20 [2021-07-09 17:38:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:30,396 INFO L482 AbstractCegarLoop]: Abstraction has 475 states and 1435 transitions. [2021-07-09 17:38:30,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1435 transitions. [2021-07-09 17:38:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:30,397 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:30,397 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:30,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable260 [2021-07-09 17:38:30,605 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:30,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:30,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1032797682, now seen corresponding path program 12 times [2021-07-09 17:38:30,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:30,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146526994] [2021-07-09 17:38:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:30,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:30,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146526994] [2021-07-09 17:38:30,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146526994] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:30,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820458238] [2021-07-09 17:38:30,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:30,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-07-09 17:38:30,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:30,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:30,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:31,180 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-07-09 17:38:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:31,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820458238] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:31,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:31,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:38:31,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141669901] [2021-07-09 17:38:31,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:38:31,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:38:31,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:38:31,470 INFO L87 Difference]: Start difference. First operand 475 states and 1435 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:31,626 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-09 17:38:31,797 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2021-07-09 17:38:32,024 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-07-09 17:38:32,275 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2021-07-09 17:38:32,731 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-07-09 17:38:32,995 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-07-09 17:38:33,221 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2021-07-09 17:38:33,427 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-07-09 17:38:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:33,469 INFO L93 Difference]: Finished difference Result 793 states and 2341 transitions. [2021-07-09 17:38:33,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-09 17:38:33,469 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:38:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:33,470 INFO L225 Difference]: With dead ends: 793 [2021-07-09 17:38:33,470 INFO L226 Difference]: Without dead ends: 778 [2021-07-09 17:38:33,470 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2348.9ms TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:38:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-07-09 17:38:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 476. [2021-07-09 17:38:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 3.031578947368421) internal successors, (1440), 475 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1440 transitions. [2021-07-09 17:38:33,477 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1440 transitions. Word has length 20 [2021-07-09 17:38:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:33,477 INFO L482 AbstractCegarLoop]: Abstraction has 476 states and 1440 transitions. [2021-07-09 17:38:33,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1440 transitions. [2021-07-09 17:38:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:33,478 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:33,478 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:33,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2021-07-09 17:38:33,679 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:33,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:33,679 INFO L82 PathProgramCache]: Analyzing trace with hash -978365570, now seen corresponding path program 13 times [2021-07-09 17:38:33,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:33,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624264790] [2021-07-09 17:38:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:33,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:33,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624264790] [2021-07-09 17:38:33,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624264790] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:33,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215072223] [2021-07-09 17:38:33,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:33,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-09 17:38:33,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:34,374 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-07-09 17:38:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:34,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215072223] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:34,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:34,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:38:34,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79355171] [2021-07-09 17:38:34,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:38:34,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:34,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:38:34,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:38:34,549 INFO L87 Difference]: Start difference. First operand 476 states and 1440 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:35,181 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-07-09 17:38:35,338 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-07-09 17:38:35,475 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2021-07-09 17:38:35,716 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-07-09 17:38:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:35,788 INFO L93 Difference]: Finished difference Result 729 states and 2132 transitions. [2021-07-09 17:38:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-09 17:38:35,789 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 20 [2021-07-09 17:38:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:35,790 INFO L225 Difference]: With dead ends: 729 [2021-07-09 17:38:35,790 INFO L226 Difference]: Without dead ends: 714 [2021-07-09 17:38:35,790 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1597.6ms TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2021-07-09 17:38:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-07-09 17:38:35,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 480. [2021-07-09 17:38:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 3.0313152400835075) internal successors, (1452), 479 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1452 transitions. [2021-07-09 17:38:35,796 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1452 transitions. Word has length 20 [2021-07-09 17:38:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:35,796 INFO L482 AbstractCegarLoop]: Abstraction has 480 states and 1452 transitions. [2021-07-09 17:38:35,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1452 transitions. [2021-07-09 17:38:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:35,797 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:35,797 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:36,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable297 [2021-07-09 17:38:36,013 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:36,013 INFO L82 PathProgramCache]: Analyzing trace with hash -685146856, now seen corresponding path program 14 times [2021-07-09 17:38:36,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:36,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35513147] [2021-07-09 17:38:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:36,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:36,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35513147] [2021-07-09 17:38:36,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35513147] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:36,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936917665] [2021-07-09 17:38:36,389 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:36,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:38:36,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:36,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:36,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:36,863 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-07-09 17:38:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:37,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936917665] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:37,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:37,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:37,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760431179] [2021-07-09 17:38:37,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:37,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:37,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:37,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:37,067 INFO L87 Difference]: Start difference. First operand 480 states and 1452 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:37,789 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-07-09 17:38:38,060 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-07-09 17:38:38,229 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-07-09 17:38:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:38,262 INFO L93 Difference]: Finished difference Result 690 states and 2034 transitions. [2021-07-09 17:38:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:38:38,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:38,263 INFO L225 Difference]: With dead ends: 690 [2021-07-09 17:38:38,264 INFO L226 Difference]: Without dead ends: 675 [2021-07-09 17:38:38,264 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1700.6ms TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-07-09 17:38:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-07-09 17:38:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 476. [2021-07-09 17:38:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 3.0294736842105263) internal successors, (1439), 475 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1439 transitions. [2021-07-09 17:38:38,270 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1439 transitions. Word has length 20 [2021-07-09 17:38:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:38,270 INFO L482 AbstractCegarLoop]: Abstraction has 476 states and 1439 transitions. [2021-07-09 17:38:38,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1439 transitions. [2021-07-09 17:38:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:38,271 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:38,271 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:38,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:38,471 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash 853559068, now seen corresponding path program 15 times [2021-07-09 17:38:38,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:38,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632598062] [2021-07-09 17:38:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:39,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:39,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632598062] [2021-07-09 17:38:39,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632598062] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:39,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316960901] [2021-07-09 17:38:39,014 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:39,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-09 17:38:39,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:39,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:39,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:39,415 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-07-09 17:38:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:39,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316960901] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:39,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:39,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950798328] [2021-07-09 17:38:39,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:39,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:39,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:39,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:39,626 INFO L87 Difference]: Start difference. First operand 476 states and 1439 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:39,852 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-09 17:38:39,992 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-07-09 17:38:40,224 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-09 17:38:41,071 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2021-07-09 17:38:41,395 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-09 17:38:41,697 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-07-09 17:38:41,980 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2021-07-09 17:38:42,347 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2021-07-09 17:38:42,701 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-07-09 17:38:43,003 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-09 17:38:43,235 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-09 17:38:43,497 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2021-07-09 17:38:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:43,549 INFO L93 Difference]: Finished difference Result 792 states and 2327 transitions. [2021-07-09 17:38:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-09 17:38:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:43,550 INFO L225 Difference]: With dead ends: 792 [2021-07-09 17:38:43,550 INFO L226 Difference]: Without dead ends: 777 [2021-07-09 17:38:43,551 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4404.7ms TimeCoverageRelationStatistics Valid=337, Invalid=1303, Unknown=0, NotChecked=0, Total=1640 [2021-07-09 17:38:43,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-07-09 17:38:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 469. [2021-07-09 17:38:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.034188034188034) internal successors, (1420), 468 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1420 transitions. [2021-07-09 17:38:43,558 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1420 transitions. Word has length 20 [2021-07-09 17:38:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:43,558 INFO L482 AbstractCegarLoop]: Abstraction has 469 states and 1420 transitions. [2021-07-09 17:38:43,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:43,558 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1420 transitions. [2021-07-09 17:38:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:43,559 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:43,559 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:43,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable342 [2021-07-09 17:38:43,773 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:43,773 INFO L82 PathProgramCache]: Analyzing trace with hash -876815946, now seen corresponding path program 16 times [2021-07-09 17:38:43,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:43,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683847684] [2021-07-09 17:38:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:44,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:44,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683847684] [2021-07-09 17:38:44,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683847684] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:44,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760298400] [2021-07-09 17:38:44,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:44,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 17:38:44,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:44,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:44,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760298400] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:44,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:44,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:44,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622685419] [2021-07-09 17:38:44,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:44,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:44,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:44,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:44,672 INFO L87 Difference]: Start difference. First operand 469 states and 1420 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:44,854 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-09 17:38:45,064 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-09 17:38:45,520 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-07-09 17:38:45,661 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-07-09 17:38:45,799 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-07-09 17:38:46,119 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-07-09 17:38:46,322 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-09 17:38:46,598 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-09 17:38:46,739 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-07-09 17:38:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:46,915 INFO L93 Difference]: Finished difference Result 660 states and 1962 transitions. [2021-07-09 17:38:46,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-09 17:38:46,916 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:46,917 INFO L225 Difference]: With dead ends: 660 [2021-07-09 17:38:46,917 INFO L226 Difference]: Without dead ends: 645 [2021-07-09 17:38:46,918 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2494.8ms TimeCoverageRelationStatistics Valid=206, Invalid=916, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:38:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-07-09 17:38:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 467. [2021-07-09 17:38:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 3.032188841201717) internal successors, (1413), 466 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1413 transitions. [2021-07-09 17:38:46,923 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1413 transitions. Word has length 20 [2021-07-09 17:38:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:46,924 INFO L482 AbstractCegarLoop]: Abstraction has 467 states and 1413 transitions. [2021-07-09 17:38:46,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1413 transitions. [2021-07-09 17:38:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:46,924 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:46,924 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:47,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:47,125 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:47,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:47,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1982279990, now seen corresponding path program 17 times [2021-07-09 17:38:47,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:47,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231245598] [2021-07-09 17:38:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:47,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:47,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231245598] [2021-07-09 17:38:47,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231245598] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:47,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589597539] [2021-07-09 17:38:47,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:47,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:38:47,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:47,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:47,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:47,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589597539] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:47,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:47,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:47,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029946894] [2021-07-09 17:38:47,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:47,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:47,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:47,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:47,917 INFO L87 Difference]: Start difference. First operand 467 states and 1413 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:48,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:48,525 INFO L93 Difference]: Finished difference Result 594 states and 1777 transitions. [2021-07-09 17:38:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:38:48,526 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:48,527 INFO L225 Difference]: With dead ends: 594 [2021-07-09 17:38:48,527 INFO L226 Difference]: Without dead ends: 579 [2021-07-09 17:38:48,527 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 873.7ms TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-07-09 17:38:48,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-07-09 17:38:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 469. [2021-07-09 17:38:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 3.034188034188034) internal successors, (1420), 468 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1420 transitions. [2021-07-09 17:38:48,533 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1420 transitions. Word has length 20 [2021-07-09 17:38:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:48,533 INFO L482 AbstractCegarLoop]: Abstraction has 469 states and 1420 transitions. [2021-07-09 17:38:48,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:48,533 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1420 transitions. [2021-07-09 17:38:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:48,534 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:48,534 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:48,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:48,734 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:48,735 INFO L82 PathProgramCache]: Analyzing trace with hash -714017834, now seen corresponding path program 18 times [2021-07-09 17:38:48,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:48,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381091225] [2021-07-09 17:38:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:49,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:49,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381091225] [2021-07-09 17:38:49,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381091225] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:49,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516528735] [2021-07-09 17:38:49,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:49,112 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-07-09 17:38:49,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:49,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:49,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516528735] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:49,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:49,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:38:49,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213840192] [2021-07-09 17:38:49,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:38:49,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:49,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:38:49,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:38:49,606 INFO L87 Difference]: Start difference. First operand 469 states and 1420 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:50,801 INFO L93 Difference]: Finished difference Result 627 states and 1868 transitions. [2021-07-09 17:38:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:38:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:38:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:50,802 INFO L225 Difference]: With dead ends: 627 [2021-07-09 17:38:50,802 INFO L226 Difference]: Without dead ends: 612 [2021-07-09 17:38:50,802 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1523.1ms TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2021-07-09 17:38:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-07-09 17:38:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 465. [2021-07-09 17:38:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.0344827586206895) internal successors, (1408), 464 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1408 transitions. [2021-07-09 17:38:50,808 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1408 transitions. Word has length 20 [2021-07-09 17:38:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:50,808 INFO L482 AbstractCegarLoop]: Abstraction has 465 states and 1408 transitions. [2021-07-09 17:38:50,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1408 transitions. [2021-07-09 17:38:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:50,809 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:50,809 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:51,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable404 [2021-07-09 17:38:51,010 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:51,010 INFO L82 PathProgramCache]: Analyzing trace with hash 670139466, now seen corresponding path program 19 times [2021-07-09 17:38:51,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:51,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351230195] [2021-07-09 17:38:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:51,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:51,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351230195] [2021-07-09 17:38:51,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351230195] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:51,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028260130] [2021-07-09 17:38:51,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:51,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:51,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:52,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,194 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:38:52,203 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,212 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,221 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:38:52,229 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,237 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,243 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,243 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:38:52,250 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:38:52,258 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,265 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,266 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,282 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:38:52,290 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,298 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-09 17:38:52,305 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,313 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,318 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,319 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,326 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:38:52,333 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,341 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:38:52,348 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,357 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,364 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,372 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,373 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:38:52,382 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,390 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,398 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,404 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,404 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:38:52,411 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,417 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,418 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,431 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,437 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:38:52,445 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,465 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,471 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,472 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,478 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,483 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,484 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,492 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,502 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,508 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,509 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,514 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,515 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,522 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,527 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,528 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,536 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,543 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,549 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,550 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,556 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,563 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,563 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:38:52,574 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,580 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,581 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-09 17:38:52,589 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,599 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,605 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:38:52,614 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,620 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,625 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,626 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,632 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,632 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,638 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,646 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,654 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,661 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,667 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,667 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,672 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,673 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,677 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,678 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,683 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,688 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,695 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,700 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,706 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,711 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,712 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,718 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,722 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,722 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,728 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,729 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,733 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,734 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,738 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:38:52,744 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,749 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,753 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,754 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,758 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:38:52,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:38:52,763 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,767 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:52,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:38:52,771 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-07-09 17:38:53,006 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-07-09 17:38:53,007 INFO L628 ElimStorePlain]: treesize reduction 257, result has 56.4 percent of original size [2021-07-09 17:38:53,022 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 14 xjuncts. [2021-07-09 17:38:53,023 INFO L247 ElimStorePlain]: Needed 82 recursive calls to eliminate 2 variables, input treesize:3475, output treesize:293 [2021-07-09 17:38:53,191 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-07-09 17:38:53,609 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-07-09 17:38:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:56,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028260130] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:56,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:56,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-07-09 17:38:56,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137029585] [2021-07-09 17:38:56,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:38:56,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:56,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:38:56,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:38:56,922 INFO L87 Difference]: Start difference. First operand 465 states and 1408 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:57,686 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 108 [2021-07-09 17:38:57,879 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-07-09 17:38:58,164 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 136 [2021-07-09 17:38:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:38:58,209 INFO L93 Difference]: Finished difference Result 678 states and 2014 transitions. [2021-07-09 17:38:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 17:38:58,209 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-07-09 17:38:58,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:38:58,210 INFO L225 Difference]: With dead ends: 678 [2021-07-09 17:38:58,210 INFO L226 Difference]: Without dead ends: 663 [2021-07-09 17:38:58,210 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1761.3ms TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2021-07-09 17:38:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-07-09 17:38:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 463. [2021-07-09 17:38:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.036796536796537) internal successors, (1403), 462 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1403 transitions. [2021-07-09 17:38:58,216 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1403 transitions. Word has length 20 [2021-07-09 17:38:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:38:58,216 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1403 transitions. [2021-07-09 17:38:58,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:58,216 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1403 transitions. [2021-07-09 17:38:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:38:58,217 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:38:58,217 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:38:58,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable420 [2021-07-09 17:38:58,418 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:38:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:38:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash 20773330, now seen corresponding path program 20 times [2021-07-09 17:38:58,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:38:58,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946260875] [2021-07-09 17:38:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:38:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:38:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:58,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:38:58,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946260875] [2021-07-09 17:38:58,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946260875] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:58,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87374722] [2021-07-09 17:38:58,670 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:38:58,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:38:58,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:38:58,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:38:58,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:38:58,980 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-07-09 17:38:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:38:59,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87374722] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:38:59,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:38:59,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:38:59,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584243587] [2021-07-09 17:38:59,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:38:59,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:38:59,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:38:59,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:38:59,248 INFO L87 Difference]: Start difference. First operand 463 states and 1403 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:38:59,473 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-07-09 17:38:59,879 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-09 17:39:00,291 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-07-09 17:39:00,654 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2021-07-09 17:39:00,788 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-07-09 17:39:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:00,959 INFO L93 Difference]: Finished difference Result 681 states and 2025 transitions. [2021-07-09 17:39:00,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-09 17:39:00,959 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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 20 [2021-07-09 17:39:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:00,960 INFO L225 Difference]: With dead ends: 681 [2021-07-09 17:39:00,960 INFO L226 Difference]: Without dead ends: 666 [2021-07-09 17:39:00,960 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2015.4ms TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2021-07-09 17:39:00,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-07-09 17:39:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 462. [2021-07-09 17:39:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 3.0325379609544467) internal successors, (1398), 461 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1398 transitions. [2021-07-09 17:39:00,966 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1398 transitions. Word has length 20 [2021-07-09 17:39:00,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:00,966 INFO L482 AbstractCegarLoop]: Abstraction has 462 states and 1398 transitions. [2021-07-09 17:39:00,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1398 transitions. [2021-07-09 17:39:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:00,967 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:00,967 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:01,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1747 [2021-07-09 17:39:01,169 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:01,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:01,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1121094966, now seen corresponding path program 21 times [2021-07-09 17:39:01,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:01,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781644951] [2021-07-09 17:39:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:01,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:01,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781644951] [2021-07-09 17:39:01,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781644951] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:01,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403450510] [2021-07-09 17:39:01,525 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:01,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-09 17:39:01,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:39:01,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:01,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:02,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403450510] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:02,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:39:02,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:39:02,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258146208] [2021-07-09 17:39:02,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:39:02,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:39:02,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:39:02,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:39:02,034 INFO L87 Difference]: Start difference. First operand 462 states and 1398 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:02,586 INFO L93 Difference]: Finished difference Result 609 states and 1816 transitions. [2021-07-09 17:39:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 17:39:02,587 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:39:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:02,588 INFO L225 Difference]: With dead ends: 609 [2021-07-09 17:39:02,588 INFO L226 Difference]: Without dead ends: 594 [2021-07-09 17:39:02,588 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 952.6ms TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2021-07-09 17:39:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-07-09 17:39:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 467. [2021-07-09 17:39:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 3.040772532188841) internal successors, (1417), 466 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1417 transitions. [2021-07-09 17:39:02,595 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1417 transitions. Word has length 20 [2021-07-09 17:39:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:02,595 INFO L482 AbstractCegarLoop]: Abstraction has 467 states and 1417 transitions. [2021-07-09 17:39:02,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1417 transitions. [2021-07-09 17:39:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:02,596 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:02,596 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:02,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1763 [2021-07-09 17:39:02,796 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:02,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1167101614, now seen corresponding path program 22 times [2021-07-09 17:39:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:02,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811995434] [2021-07-09 17:39:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:03,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:03,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811995434] [2021-07-09 17:39:03,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811995434] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:03,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762526695] [2021-07-09 17:39:03,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:03,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 17:39:03,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:39:03,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:03,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:03,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:39:03,999 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-07-09 17:39:04,013 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-07-09 17:39:04,028 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,040 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,041 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:04,056 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:04,077 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:04,091 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-07-09 17:39:04,106 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,119 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,131 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,132 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:04,151 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:39:04,165 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:04,180 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-07-09 17:39:04,194 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-07-09 17:39:04,220 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,233 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,234 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:04,250 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:39:04,265 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,280 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:04,295 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,309 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,321 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,334 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,334 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,349 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,362 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,363 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,376 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,376 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,389 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,390 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:04,403 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,416 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,417 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:04,431 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,446 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,462 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,475 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,476 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,488 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,502 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,503 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,516 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,517 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,530 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,543 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-07-09 17:39:04,560 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,576 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,592 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,604 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,605 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,617 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,618 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,633 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-07-09 17:39:04,649 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,662 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,677 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,690 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,691 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,703 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,719 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,720 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,736 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,749 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:04,763 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,786 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,800 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,813 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,826 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,827 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:39:04,841 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,853 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,853 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,864 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,865 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:04,879 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,894 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,906 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,907 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-07-09 17:39:04,923 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,936 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,936 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:04,950 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:04,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:04,965 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,978 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:04,978 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:04,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-07-09 17:39:04,996 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,010 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,011 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,025 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,026 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,038 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,038 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2021-07-09 17:39:05,056 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,070 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,071 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,085 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,086 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,098 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,110 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,111 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,122 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,123 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,135 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,135 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:05,149 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,162 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,163 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:05,177 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,188 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,189 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,211 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,223 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,224 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-09 17:39:05,236 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,248 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,248 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,259 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,259 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,272 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,283 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,284 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,297 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,315 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,315 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,327 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:05,341 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,352 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,353 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:05,365 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,375 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,375 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,383 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,384 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,393 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,394 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,403 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:05,415 INFO L550 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:05,427 INFO L550 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,435 INFO L550 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2021-07-09 17:39:05,450 INFO L550 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,460 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,461 INFO L550 ElimStorePlain]: Start of recursive call 106: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,471 INFO L550 ElimStorePlain]: Start of recursive call 107: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,480 INFO L550 ElimStorePlain]: Start of recursive call 108: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,488 INFO L550 ElimStorePlain]: Start of recursive call 109: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:05,501 INFO L550 ElimStorePlain]: Start of recursive call 110: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:05,516 INFO L550 ElimStorePlain]: Start of recursive call 111: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,526 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,527 INFO L550 ElimStorePlain]: Start of recursive call 112: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,538 INFO L550 ElimStorePlain]: Start of recursive call 113: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,548 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,548 INFO L550 ElimStorePlain]: Start of recursive call 114: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,558 INFO L550 ElimStorePlain]: Start of recursive call 115: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,570 INFO L550 ElimStorePlain]: Start of recursive call 116: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,579 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,580 INFO L550 ElimStorePlain]: Start of recursive call 117: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,588 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,589 INFO L550 ElimStorePlain]: Start of recursive call 118: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,597 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,598 INFO L550 ElimStorePlain]: Start of recursive call 119: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,606 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,607 INFO L550 ElimStorePlain]: Start of recursive call 120: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,615 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,616 INFO L550 ElimStorePlain]: Start of recursive call 121: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,625 INFO L550 ElimStorePlain]: Start of recursive call 122: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,634 INFO L550 ElimStorePlain]: Start of recursive call 123: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,646 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,647 INFO L550 ElimStorePlain]: Start of recursive call 124: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,656 INFO L550 ElimStorePlain]: Start of recursive call 125: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,664 INFO L550 ElimStorePlain]: Start of recursive call 126: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,675 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,676 INFO L550 ElimStorePlain]: Start of recursive call 127: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,684 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,685 INFO L550 ElimStorePlain]: Start of recursive call 128: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,694 INFO L550 ElimStorePlain]: Start of recursive call 129: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,704 INFO L550 ElimStorePlain]: Start of recursive call 130: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,715 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,716 INFO L550 ElimStorePlain]: Start of recursive call 131: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,724 INFO L550 ElimStorePlain]: Start of recursive call 132: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:05,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:05,733 INFO L550 ElimStorePlain]: Start of recursive call 133: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,741 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,742 INFO L550 ElimStorePlain]: Start of recursive call 134: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,759 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,759 INFO L550 ElimStorePlain]: Start of recursive call 135: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,773 INFO L550 ElimStorePlain]: Start of recursive call 136: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,784 INFO L550 ElimStorePlain]: Start of recursive call 137: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,793 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,794 INFO L550 ElimStorePlain]: Start of recursive call 138: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,802 INFO L550 ElimStorePlain]: Start of recursive call 139: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,808 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,809 INFO L550 ElimStorePlain]: Start of recursive call 140: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-09 17:39:05,817 INFO L550 ElimStorePlain]: Start of recursive call 141: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,823 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,824 INFO L550 ElimStorePlain]: Start of recursive call 142: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,831 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,831 INFO L550 ElimStorePlain]: Start of recursive call 143: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,837 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,838 INFO L550 ElimStorePlain]: Start of recursive call 144: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:05,844 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:05,844 INFO L550 ElimStorePlain]: Start of recursive call 145: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:06,262 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-07-09 17:39:06,262 INFO L628 ElimStorePlain]: treesize reduction 931, result has 32.3 percent of original size [2021-07-09 17:39:06,268 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 14 xjuncts. [2021-07-09 17:39:06,268 INFO L247 ElimStorePlain]: Needed 145 recursive calls to eliminate 2 variables, input treesize:7871, output treesize:405 [2021-07-09 17:39:06,467 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-07-09 17:39:06,736 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-07-09 17:39:11,477 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-07-09 17:39:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:11,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762526695] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:11,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:39:11,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-07-09 17:39:11,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361663422] [2021-07-09 17:39:11,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-07-09 17:39:11,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:39:11,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-07-09 17:39:11,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-07-09 17:39:11,603 INFO L87 Difference]: Start difference. First operand 467 states and 1417 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:11,751 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-07-09 17:39:11,978 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-07-09 17:39:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:12,261 INFO L93 Difference]: Finished difference Result 613 states and 1834 transitions. [2021-07-09 17:39:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-09 17:39:12,262 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-07-09 17:39:12,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:12,263 INFO L225 Difference]: With dead ends: 613 [2021-07-09 17:39:12,263 INFO L226 Difference]: Without dead ends: 598 [2021-07-09 17:39:12,263 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1302.0ms TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-07-09 17:39:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-07-09 17:39:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 465. [2021-07-09 17:39:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 3.038793103448276) internal successors, (1410), 464 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1410 transitions. [2021-07-09 17:39:12,269 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1410 transitions. Word has length 20 [2021-07-09 17:39:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:12,269 INFO L482 AbstractCegarLoop]: Abstraction has 465 states and 1410 transitions. [2021-07-09 17:39:12,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1410 transitions. [2021-07-09 17:39:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:12,270 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:12,270 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:12,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1779,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:12,471 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash 30969814, now seen corresponding path program 23 times [2021-07-09 17:39:12,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:12,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624695623] [2021-07-09 17:39:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:12,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:12,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624695623] [2021-07-09 17:39:12,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624695623] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:12,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187199829] [2021-07-09 17:39:12,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:12,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:39:12,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:39:12,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:12,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:13,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187199829] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:13,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:39:13,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:39:13,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835377120] [2021-07-09 17:39:13,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:39:13,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:39:13,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:39:13,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:39:13,302 INFO L87 Difference]: Start difference. First operand 465 states and 1410 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:13,657 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-09 17:39:13,786 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-09 17:39:13,942 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-07-09 17:39:14,240 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-07-09 17:39:14,388 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-07-09 17:39:14,561 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-09 17:39:14,918 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-07-09 17:39:15,050 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-07-09 17:39:15,382 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-07-09 17:39:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:15,526 INFO L93 Difference]: Finished difference Result 739 states and 2197 transitions. [2021-07-09 17:39:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-09 17:39:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:39:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:15,527 INFO L225 Difference]: With dead ends: 739 [2021-07-09 17:39:15,527 INFO L226 Difference]: Without dead ends: 724 [2021-07-09 17:39:15,528 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2405.8ms TimeCoverageRelationStatistics Valid=288, Invalid=1194, Unknown=0, NotChecked=0, Total=1482 [2021-07-09 17:39:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-07-09 17:39:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 463. [2021-07-09 17:39:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 3.036796536796537) internal successors, (1403), 462 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1403 transitions. [2021-07-09 17:39:15,534 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1403 transitions. Word has length 20 [2021-07-09 17:39:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:15,534 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1403 transitions. [2021-07-09 17:39:15,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1403 transitions. [2021-07-09 17:39:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:15,535 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:15,535 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:15,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3761,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:15,736 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:15,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1850936306, now seen corresponding path program 24 times [2021-07-09 17:39:15,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:15,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534849372] [2021-07-09 17:39:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:15,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:15,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534849372] [2021-07-09 17:39:15,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534849372] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:15,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048776047] [2021-07-09 17:39:15,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:16,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-07-09 17:39:16,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:39:16,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:16,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:16,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048776047] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:16,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:39:16,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-07-09 17:39:16,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891476362] [2021-07-09 17:39:16,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 17:39:16,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:39:16,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 17:39:16,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-07-09 17:39:16,517 INFO L87 Difference]: Start difference. First operand 463 states and 1403 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:17,596 INFO L93 Difference]: Finished difference Result 619 states and 1849 transitions. [2021-07-09 17:39:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:39:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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 20 [2021-07-09 17:39:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:17,597 INFO L225 Difference]: With dead ends: 619 [2021-07-09 17:39:17,597 INFO L226 Difference]: Without dead ends: 604 [2021-07-09 17:39:17,597 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1270.1ms TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2021-07-09 17:39:17,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-07-09 17:39:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 461. [2021-07-09 17:39:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.0304347826086957) internal successors, (1394), 460 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1394 transitions. [2021-07-09 17:39:17,603 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1394 transitions. Word has length 20 [2021-07-09 17:39:17,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:17,603 INFO L482 AbstractCegarLoop]: Abstraction has 461 states and 1394 transitions. [2021-07-09 17:39:17,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1394 transitions. [2021-07-09 17:39:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:17,604 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:17,604 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:17,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3782 [2021-07-09 17:39:17,804 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:17,805 INFO L82 PathProgramCache]: Analyzing trace with hash -756638044, now seen corresponding path program 25 times [2021-07-09 17:39:17,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:17,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701986017] [2021-07-09 17:39:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:17,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:17,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701986017] [2021-07-09 17:39:17,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701986017] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:17,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326575268] [2021-07-09 17:39:17,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:18,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:18,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:18,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326575268] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:18,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:39:18,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:39:18,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747718938] [2021-07-09 17:39:18,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:39:18,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:39:18,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:39:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:39:18,480 INFO L87 Difference]: Start difference. First operand 461 states and 1394 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:19,134 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-07-09 17:39:19,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:19,168 INFO L93 Difference]: Finished difference Result 730 states and 2166 transitions. [2021-07-09 17:39:19,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:39:19,169 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:39:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:19,170 INFO L225 Difference]: With dead ends: 730 [2021-07-09 17:39:19,170 INFO L226 Difference]: Without dead ends: 715 [2021-07-09 17:39:19,170 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 943.9ms TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:39:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-07-09 17:39:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 460. [2021-07-09 17:39:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 3.028322440087146) internal successors, (1390), 459 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1390 transitions. [2021-07-09 17:39:19,176 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1390 transitions. Word has length 20 [2021-07-09 17:39:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:19,176 INFO L482 AbstractCegarLoop]: Abstraction has 460 states and 1390 transitions. [2021-07-09 17:39:19,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1390 transitions. [2021-07-09 17:39:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:19,177 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:19,177 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:19,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3801 [2021-07-09 17:39:19,378 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:19,378 INFO L82 PathProgramCache]: Analyzing trace with hash 629398172, now seen corresponding path program 26 times [2021-07-09 17:39:19,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:19,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339952341] [2021-07-09 17:39:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:19,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:19,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339952341] [2021-07-09 17:39:19,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339952341] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:19,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914128860] [2021-07-09 17:39:19,735 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:19,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 17:39:19,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:39:19,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:19,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:20,099 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-07-09 17:39:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:20,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914128860] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:20,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:39:20,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:39:20,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192788891] [2021-07-09 17:39:20,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:39:20,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:39:20,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:39:20,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:39:20,285 INFO L87 Difference]: Start difference. First operand 460 states and 1390 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:20,631 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-07-09 17:39:20,806 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2021-07-09 17:39:21,044 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-07-09 17:39:21,167 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-07-09 17:39:21,393 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2021-07-09 17:39:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:21,635 INFO L93 Difference]: Finished difference Result 560 states and 1664 transitions. [2021-07-09 17:39:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-09 17:39:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:39:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:21,636 INFO L225 Difference]: With dead ends: 560 [2021-07-09 17:39:21,636 INFO L226 Difference]: Without dead ends: 545 [2021-07-09 17:39:21,636 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1713.6ms TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:39:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-07-09 17:39:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 466. [2021-07-09 17:39:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 3.0301075268817206) internal successors, (1409), 465 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1409 transitions. [2021-07-09 17:39:21,642 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1409 transitions. Word has length 20 [2021-07-09 17:39:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:21,642 INFO L482 AbstractCegarLoop]: Abstraction has 466 states and 1409 transitions. [2021-07-09 17:39:21,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1409 transitions. [2021-07-09 17:39:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:21,643 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:21,643 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:21,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3817 [2021-07-09 17:39:21,849 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1252975526, now seen corresponding path program 27 times [2021-07-09 17:39:21,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:21,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18530629] [2021-07-09 17:39:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:22,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:22,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18530629] [2021-07-09 17:39:22,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18530629] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:22,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781294478] [2021-07-09 17:39:22,180 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:22,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-09 17:39:22,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:39:22,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:22,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:22,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781294478] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:22,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 17:39:22,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-09 17:39:22,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969932419] [2021-07-09 17:39:22,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-09 17:39:22,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:39:22,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-09 17:39:22,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-07-09 17:39:22,712 INFO L87 Difference]: Start difference. First operand 466 states and 1409 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:23,090 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-07-09 17:39:23,234 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-07-09 17:39:23,486 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-07-09 17:39:23,623 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2021-07-09 17:39:23,929 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-07-09 17:39:24,049 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-07-09 17:39:24,601 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2021-07-09 17:39:24,724 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-07-09 17:39:24,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:39:24,756 INFO L93 Difference]: Finished difference Result 684 states and 2021 transitions. [2021-07-09 17:39:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-09 17:39:24,756 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 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 20 [2021-07-09 17:39:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:39:24,757 INFO L225 Difference]: With dead ends: 684 [2021-07-09 17:39:24,757 INFO L226 Difference]: Without dead ends: 654 [2021-07-09 17:39:24,757 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2372.8ms TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2021-07-09 17:39:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-07-09 17:39:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 464. [2021-07-09 17:39:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.0280777537796975) internal successors, (1402), 463 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1402 transitions. [2021-07-09 17:39:24,763 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1402 transitions. Word has length 20 [2021-07-09 17:39:24,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:39:24,763 INFO L482 AbstractCegarLoop]: Abstraction has 464 states and 1402 transitions. [2021-07-09 17:39:24,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:39:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1402 transitions. [2021-07-09 17:39:24,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-07-09 17:39:24,764 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:39:24,764 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:39:24,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3836 [2021-07-09 17:39:24,965 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:39:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:39:24,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1606120410, now seen corresponding path program 28 times [2021-07-09 17:39:24,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:39:24,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180540618] [2021-07-09 17:39:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:39:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:39:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:39:25,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:39:25,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180540618] [2021-07-09 17:39:25,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180540618] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 17:39:25,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359809957] [2021-07-09 17:39:25,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 17:39:25,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 17:39:25,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 17:39:25,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-09 17:39:25,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 17:39:26,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,249 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,258 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,265 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,273 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,281 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,289 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,297 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,305 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,313 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,321 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,329 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,336 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,344 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,352 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:26,360 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,367 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,375 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,382 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,390 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:26,398 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,404 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,405 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,413 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,419 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,419 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,428 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,436 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,444 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:26,453 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:26,462 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,470 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,476 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,477 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,486 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,494 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:26,503 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,509 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,517 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,524 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,532 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,538 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,538 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,545 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,552 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,560 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,568 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,573 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,574 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,581 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,586 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,587 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,594 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,601 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,608 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,615 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,621 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-09 17:39:26,628 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,635 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,641 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,647 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,648 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,655 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,660 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,661 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,667 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,672 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,677 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,682 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,686 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,687 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,692 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,697 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,697 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,702 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,702 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:26,709 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,715 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,720 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,724 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,725 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,731 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,735 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2021-07-09 17:39:26,741 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-07-09 17:39:26,747 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,752 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,756 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,760 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,761 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,765 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,765 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,769 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,769 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,774 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-09 17:39:26,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-07-09 17:39:26,779 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,784 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:26,787 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-07-09 17:39:26,787 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-07-09 17:39:27,085 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-07-09 17:39:27,085 INFO L628 ElimStorePlain]: treesize reduction 150, result has 72.9 percent of original size [2021-07-09 17:39:27,091 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 14 xjuncts. [2021-07-09 17:39:27,091 INFO L247 ElimStorePlain]: Needed 82 recursive calls to eliminate 2 variables, input treesize:3880, output treesize:363 [2021-07-09 17:39:27,270 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-07-09 17:39:27,518 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-07-09 17:39:27,824 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2021-07-09 17:39:27,996 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 145 [2021-07-09 17:41:32,530 WARN L205 SmtUtils]: Spent 2.08 m on a formula simplification. DAG size of input: 145 DAG size of output: 160 [2021-07-09 17:41:33,435 WARN L205 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-09 17:41:51,753 WARN L205 SmtUtils]: Spent 18.32 s on a formula simplification. DAG size of input: 148 DAG size of output: 150 [2021-07-09 17:41:54,522 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 138 DAG size of output: 142 [2021-07-09 17:41:55,448 WARN L205 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2021-07-09 17:41:56,271 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-09 17:41:57,198 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-09 17:41:57,843 WARN L205 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-09 17:42:13,086 WARN L205 SmtUtils]: Spent 15.24 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-09 17:42:13,640 WARN L205 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 123 [2021-07-09 17:42:14,515 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-09 17:42:15,517 WARN L205 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 123 [2021-07-09 17:42:18,535 WARN L205 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 128 DAG size of output: 128 [2021-07-09 17:42:18,703 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 130 [2021-07-09 17:42:32,725 WARN L205 SmtUtils]: Spent 14.01 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-09 17:42:32,996 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 121 [2021-07-09 17:42:34,131 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2021-07-09 17:42:34,812 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 130 [2021-07-09 17:42:37,643 WARN L205 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 160 DAG size of output: 160 [2021-07-09 17:42:38,214 WARN L205 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 144 [2021-07-09 17:42:41,905 WARN L205 SmtUtils]: Spent 3.68 s on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2021-07-09 17:42:45,503 WARN L205 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 145 DAG size of output: 145 [2021-07-09 17:42:53,282 WARN L205 SmtUtils]: Spent 7.78 s on a formula simplification. DAG size of input: 145 DAG size of output: 160 [2021-07-09 17:42:57,049 WARN L205 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-09 17:42:57,218 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-09 17:43:01,671 WARN L205 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-09 17:43:02,309 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 123 [2021-07-09 17:43:27,113 WARN L205 SmtUtils]: Spent 24.76 s on a formula simplification. DAG size of input: 128 DAG size of output: 128 [2021-07-09 17:43:27,493 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 128 [2021-07-09 17:43:28,727 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2021-07-09 17:43:29,168 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 123 [2021-07-09 17:43:55,906 WARN L205 SmtUtils]: Spent 26.65 s on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2021-07-09 17:43:56,230 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 128 [2021-07-09 17:43:56,406 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 136 [2021-07-09 17:44:02,376 WARN L205 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 136 DAG size of output: 151 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown