/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 03:33:12,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 03:33:12,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 03:33:12,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-15 03:33:12,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-15 03:33:12,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-15 03:33:12,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-15 03:33:12,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-15 03:33:12,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-15 03:33:12,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-15 03:33:12,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-15 03:33:12,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-15 03:33:12,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-15 03:33:12,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-15 03:33:12,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-15 03:33:12,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-15 03:33:12,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-15 03:33:12,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-15 03:33:12,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-15 03:33:12,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-15 03:33:12,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-15 03:33:12,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-15 03:33:12,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-15 03:33:12,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-15 03:33:12,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-15 03:33:12,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-15 03:33:12,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-15 03:33:12,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-15 03:33:12,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-15 03:33:12,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-15 03:33:12,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-15 03:33:12,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-15 03:33:12,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-15 03:33:12,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-15 03:33:12,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-15 03:33:12,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-15 03:33:12,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-15 03:33:12,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-15 03:33:12,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 03:33:12,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 03:33:12,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 03:33:12,186 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 [2021-04-15 03:33:12,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 03:33:12,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 03:33:12,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 03:33:12,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 03:33:12,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 03:33:12,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 03:33:12,226 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 03:33:12,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 03:33:12,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 03:33:12,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 03:33:12,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 03:33:12,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 03:33:12,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 03:33:12,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 03:33:12,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 03:33:12,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 03:33:12,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 03:33:12,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 03:33:12,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 03:33:12,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 03:33:12,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 03:33:12,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 03:33:12,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 03:33:12,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 03:33:12,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 03:33:12,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 03:33:12,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 03:33:12,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 03:33:12,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 03:33:12,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 03:33:12,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 03:33:12,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 03:33:12,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 03:33:12,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 03:33:12,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 03:33:12,658 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-15 03:33:12,663 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-15 03:33:12,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-04-15 03:33:12,664 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-04-15 03:33:12,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 03:33:12,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-15 03:33:12,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 03:33:12,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 03:33:12,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 03:33:12,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 03:33:12,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 03:33:12,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 03:33:12,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 03:33:12,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/1) ... [2021-04-15 03:33:12,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 03:33:12,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 03:33:12,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 03:33:12,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 03:33:12,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (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 [2021-04-15 03:33:12,948 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-15 03:33:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-15 03:33:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-15 03:33:12,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-15 03:33:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-15 03:33:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-15 03:33:12,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-15 03:33:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 03:33:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 03:33:12,950 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-04-15 03:33:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-04-15 03:33:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-04-15 03:33:12,950 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-04-15 03:33:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-04-15 03:33:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-04-15 03:33:12,950 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-04-15 03:33:12,951 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-04-15 03:33:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-04-15 03:33:12,951 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-04-15 03:33:12,951 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-04-15 03:33:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-04-15 03:33:12,952 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 03:33:13,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 03:33:13,205 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-15 03:33:13,207 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:33:13 BoogieIcfgContainer [2021-04-15 03:33:13,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 03:33:13,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 03:33:13,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 03:33:13,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 03:33:13,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 03:33:12" (1/2) ... [2021-04-15 03:33:13,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c892a3 and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 03:33:13, skipping insertion in model container [2021-04-15 03:33:13,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:33:13" (2/2) ... [2021-04-15 03:33:13,234 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-04-15 03:33:13,240 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 03:33:13,241 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 03:33:13,245 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 03:33:13,246 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 03:33:13,356 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-04-15 03:33:13,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-04-15 03:33:13,401 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 03:33:13,401 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 03:33:13,402 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 03:33:13,402 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 03:33:13,402 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 03:33:13,402 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 03:33:13,402 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 03:33:13,402 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 03:33:13,421 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 54 transitions, 156 flow [2021-04-15 03:33:37,916 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:33:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:33:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:33:38,857 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:33:38,858 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:33:38,858 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:33:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:33:38,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1161035374, now seen corresponding path program 1 times [2021-04-15 03:33:38,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:33:38,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913660839] [2021-04-15 03:33:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:33:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:33:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:33:39,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913660839] [2021-04-15 03:33:39,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:33:39,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:33:39,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384844287] [2021-04-15 03:33:39,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 03:33:39,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:33:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 03:33:39,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:33:39,383 INFO L87 Difference]: Start difference. First operand has 74654 states, 74652 states have (on average 5.020736216042437) internal successors, (374808), 74653 states have internal predecessors, (374808), 0 states have call successors, (0), 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 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:33:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:33:42,575 INFO L93 Difference]: Finished difference Result 201088 states and 980337 transitions. [2021-04-15 03:33:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 03:33:42,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:33:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:33:44,323 INFO L225 Difference]: With dead ends: 201088 [2021-04-15 03:33:44,324 INFO L226 Difference]: Without dead ends: 201088 [2021-04-15 03:33:44,326 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:33:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201088 states. [2021-04-15 03:33:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201088 to 100373. [2021-04-15 03:33:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100373 states, 100372 states have (on average 4.930000398517515) internal successors, (494834), 100372 states have internal predecessors, (494834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:33:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100373 states to 100373 states and 494834 transitions. [2021-04-15 03:33:53,783 INFO L78 Accepts]: Start accepts. Automaton has 100373 states and 494834 transitions. Word has length 46 [2021-04-15 03:33:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:33:53,784 INFO L480 AbstractCegarLoop]: Abstraction has 100373 states and 494834 transitions. [2021-04-15 03:33:53,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:33:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 100373 states and 494834 transitions. [2021-04-15 03:33:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:33:54,407 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:33:54,407 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:33:54,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 03:33:54,408 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:33:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:33:54,410 INFO L82 PathProgramCache]: Analyzing trace with hash 118219790, now seen corresponding path program 2 times [2021-04-15 03:33:54,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:33:54,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797794737] [2021-04-15 03:33:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:33:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:33:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:33:54,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797794737] [2021-04-15 03:33:54,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:33:54,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 03:33:54,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50493403] [2021-04-15 03:33:54,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 03:33:54,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:33:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 03:33:54,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:33:54,534 INFO L87 Difference]: Start difference. First operand 100373 states and 494834 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:33:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:33:57,195 INFO L93 Difference]: Finished difference Result 237543 states and 1143295 transitions. [2021-04-15 03:33:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 03:33:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:33:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:33:59,378 INFO L225 Difference]: With dead ends: 237543 [2021-04-15 03:33:59,378 INFO L226 Difference]: Without dead ends: 237543 [2021-04-15 03:33:59,379 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:34:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237543 states. [2021-04-15 03:34:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237543 to 124242. [2021-04-15 03:34:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124242 states, 124241 states have (on average 4.865503336257757) internal successors, (604495), 124241 states have internal predecessors, (604495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:08,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124242 states to 124242 states and 604495 transitions. [2021-04-15 03:34:08,655 INFO L78 Accepts]: Start accepts. Automaton has 124242 states and 604495 transitions. Word has length 46 [2021-04-15 03:34:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:34:08,657 INFO L480 AbstractCegarLoop]: Abstraction has 124242 states and 604495 transitions. [2021-04-15 03:34:08,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 124242 states and 604495 transitions. [2021-04-15 03:34:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:34:09,159 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:34:09,159 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:34:09,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 03:34:09,160 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:34:09,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:34:09,160 INFO L82 PathProgramCache]: Analyzing trace with hash 126568656, now seen corresponding path program 3 times [2021-04-15 03:34:09,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:34:09,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074295230] [2021-04-15 03:34:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:34:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:34:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:34:09,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074295230] [2021-04-15 03:34:09,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:34:09,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:34:09,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521701259] [2021-04-15 03:34:09,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:34:09,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:34:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:34:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:34:09,297 INFO L87 Difference]: Start difference. First operand 124242 states and 604495 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:34:12,478 INFO L93 Difference]: Finished difference Result 232977 states and 1116666 transitions. [2021-04-15 03:34:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 03:34:12,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:34:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:34:13,810 INFO L225 Difference]: With dead ends: 232977 [2021-04-15 03:34:13,810 INFO L226 Difference]: Without dead ends: 232977 [2021-04-15 03:34:13,811 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:34:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2021-04-15 03:34:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 140760. [2021-04-15 03:34:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140760 states, 140759 states have (on average 4.84867752683665) internal successors, (682495), 140759 states have internal predecessors, (682495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140760 states to 140760 states and 682495 transitions. [2021-04-15 03:34:23,113 INFO L78 Accepts]: Start accepts. Automaton has 140760 states and 682495 transitions. Word has length 46 [2021-04-15 03:34:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:34:23,114 INFO L480 AbstractCegarLoop]: Abstraction has 140760 states and 682495 transitions. [2021-04-15 03:34:23,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 140760 states and 682495 transitions. [2021-04-15 03:34:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:34:23,651 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:34:23,651 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:34:23,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 03:34:23,652 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:34:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:34:23,652 INFO L82 PathProgramCache]: Analyzing trace with hash 151712618, now seen corresponding path program 4 times [2021-04-15 03:34:23,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:34:23,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845028346] [2021-04-15 03:34:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:34:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:34:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:34:23,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845028346] [2021-04-15 03:34:23,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:34:23,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:34:23,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987116032] [2021-04-15 03:34:23,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:34:23,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:34:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:34:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:34:23,723 INFO L87 Difference]: Start difference. First operand 140760 states and 682495 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:34:26,250 INFO L93 Difference]: Finished difference Result 207060 states and 995129 transitions. [2021-04-15 03:34:26,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:34:26,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:34:26,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:34:28,040 INFO L225 Difference]: With dead ends: 207060 [2021-04-15 03:34:28,040 INFO L226 Difference]: Without dead ends: 207060 [2021-04-15 03:34:28,041 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 36.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:34:29,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207060 states. [2021-04-15 03:34:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207060 to 146091. [2021-04-15 03:34:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146091 states, 146090 states have (on average 4.832856458347594) internal successors, (706032), 146090 states have internal predecessors, (706032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146091 states to 146091 states and 706032 transitions. [2021-04-15 03:34:36,533 INFO L78 Accepts]: Start accepts. Automaton has 146091 states and 706032 transitions. Word has length 46 [2021-04-15 03:34:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:34:36,533 INFO L480 AbstractCegarLoop]: Abstraction has 146091 states and 706032 transitions. [2021-04-15 03:34:36,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 146091 states and 706032 transitions. [2021-04-15 03:34:37,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:34:37,044 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:34:37,044 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:34:37,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 03:34:37,044 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:34:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:34:37,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2037963086, now seen corresponding path program 5 times [2021-04-15 03:34:37,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:34:37,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374606633] [2021-04-15 03:34:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:34:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:34:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:34:37,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374606633] [2021-04-15 03:34:37,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:34:37,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:34:37,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022403267] [2021-04-15 03:34:37,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:34:37,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:34:37,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:34:37,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:34:37,124 INFO L87 Difference]: Start difference. First operand 146091 states and 706032 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:34:40,667 INFO L93 Difference]: Finished difference Result 271147 states and 1272171 transitions. [2021-04-15 03:34:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:34:40,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:34:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:34:42,928 INFO L225 Difference]: With dead ends: 271147 [2021-04-15 03:34:42,928 INFO L226 Difference]: Without dead ends: 271147 [2021-04-15 03:34:42,929 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-04-15 03:34:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271147 states. [2021-04-15 03:34:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271147 to 164447. [2021-04-15 03:34:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164447 states, 164446 states have (on average 4.712294613429332) internal successors, (774918), 164446 states have internal predecessors, (774918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164447 states to 164447 states and 774918 transitions. [2021-04-15 03:34:53,144 INFO L78 Accepts]: Start accepts. Automaton has 164447 states and 774918 transitions. Word has length 46 [2021-04-15 03:34:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:34:53,145 INFO L480 AbstractCegarLoop]: Abstraction has 164447 states and 774918 transitions. [2021-04-15 03:34:53,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 164447 states and 774918 transitions. [2021-04-15 03:34:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:34:53,970 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:34:53,971 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:34:53,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 03:34:53,972 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:34:53,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:34:53,973 INFO L82 PathProgramCache]: Analyzing trace with hash 960821742, now seen corresponding path program 6 times [2021-04-15 03:34:53,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:34:53,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024154818] [2021-04-15 03:34:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:34:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:34:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:34:54,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024154818] [2021-04-15 03:34:54,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:34:54,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:34:54,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993245537] [2021-04-15 03:34:54,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:34:54,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:34:54,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:34:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:34:54,149 INFO L87 Difference]: Start difference. First operand 164447 states and 774918 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:34:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:34:58,372 INFO L93 Difference]: Finished difference Result 281393 states and 1303094 transitions. [2021-04-15 03:34:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:34:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:34:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:35:01,261 INFO L225 Difference]: With dead ends: 281393 [2021-04-15 03:35:01,261 INFO L226 Difference]: Without dead ends: 281393 [2021-04-15 03:35:01,262 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:35:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281393 states. [2021-04-15 03:35:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281393 to 185569. [2021-04-15 03:35:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185569 states, 185568 states have (on average 4.64495494912916) internal successors, (861955), 185568 states have internal predecessors, (861955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185569 states to 185569 states and 861955 transitions. [2021-04-15 03:35:12,684 INFO L78 Accepts]: Start accepts. Automaton has 185569 states and 861955 transitions. Word has length 46 [2021-04-15 03:35:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:35:12,685 INFO L480 AbstractCegarLoop]: Abstraction has 185569 states and 861955 transitions. [2021-04-15 03:35:12,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 185569 states and 861955 transitions. [2021-04-15 03:35:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:35:13,421 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:35:13,422 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:35:13,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 03:35:13,422 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:35:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:35:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash -516090004, now seen corresponding path program 7 times [2021-04-15 03:35:13,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:35:13,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173554345] [2021-04-15 03:35:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:35:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:35:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:35:13,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173554345] [2021-04-15 03:35:13,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:35:13,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:35:13,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600368021] [2021-04-15 03:35:13,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 03:35:13,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:35:13,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 03:35:13,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:35:13,540 INFO L87 Difference]: Start difference. First operand 185569 states and 861955 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:35:17,209 INFO L93 Difference]: Finished difference Result 292927 states and 1358658 transitions. [2021-04-15 03:35:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-15 03:35:17,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:35:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:35:18,381 INFO L225 Difference]: With dead ends: 292927 [2021-04-15 03:35:18,381 INFO L226 Difference]: Without dead ends: 196405 [2021-04-15 03:35:18,382 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:35:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196405 states. [2021-04-15 03:35:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196405 to 196405. [2021-04-15 03:35:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196405 states, 196404 states have (on average 4.545100914441661) internal successors, (892676), 196404 states have internal predecessors, (892676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196405 states to 196405 states and 892676 transitions. [2021-04-15 03:35:27,737 INFO L78 Accepts]: Start accepts. Automaton has 196405 states and 892676 transitions. Word has length 46 [2021-04-15 03:35:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:35:27,737 INFO L480 AbstractCegarLoop]: Abstraction has 196405 states and 892676 transitions. [2021-04-15 03:35:27,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:27,737 INFO L276 IsEmpty]: Start isEmpty. Operand 196405 states and 892676 transitions. [2021-04-15 03:35:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:35:29,377 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:35:29,377 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:35:29,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-15 03:35:29,377 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:35:29,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:35:29,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1261406758, now seen corresponding path program 8 times [2021-04-15 03:35:29,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:35:29,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174778602] [2021-04-15 03:35:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:35:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:35:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:35:29,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174778602] [2021-04-15 03:35:29,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:35:29,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:35:29,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156658805] [2021-04-15 03:35:29,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:35:29,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:35:29,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:35:29,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:35:29,487 INFO L87 Difference]: Start difference. First operand 196405 states and 892676 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:35:32,376 INFO L93 Difference]: Finished difference Result 311447 states and 1399231 transitions. [2021-04-15 03:35:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 03:35:32,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:35:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:35:36,217 INFO L225 Difference]: With dead ends: 311447 [2021-04-15 03:35:36,218 INFO L226 Difference]: Without dead ends: 311255 [2021-04-15 03:35:36,218 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:35:38,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311255 states. [2021-04-15 03:35:47,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311255 to 207417. [2021-04-15 03:35:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207417 states, 207416 states have (on average 4.523006903999692) internal successors, (938144), 207416 states have internal predecessors, (938144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207417 states to 207417 states and 938144 transitions. [2021-04-15 03:35:49,765 INFO L78 Accepts]: Start accepts. Automaton has 207417 states and 938144 transitions. Word has length 46 [2021-04-15 03:35:49,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:35:49,765 INFO L480 AbstractCegarLoop]: Abstraction has 207417 states and 938144 transitions. [2021-04-15 03:35:49,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:49,765 INFO L276 IsEmpty]: Start isEmpty. Operand 207417 states and 938144 transitions. [2021-04-15 03:35:51,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:35:51,702 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:35:51,702 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:35:51,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-15 03:35:51,702 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:35:51,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:35:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1916670854, now seen corresponding path program 9 times [2021-04-15 03:35:51,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:35:51,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298493431] [2021-04-15 03:35:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:35:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:35:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:35:51,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298493431] [2021-04-15 03:35:51,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:35:51,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 03:35:51,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711616709] [2021-04-15 03:35:51,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 03:35:51,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:35:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 03:35:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:35:51,787 INFO L87 Difference]: Start difference. First operand 207417 states and 938144 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:35:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:35:55,608 INFO L93 Difference]: Finished difference Result 334168 states and 1492333 transitions. [2021-04-15 03:35:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 03:35:55,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:35:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:35:57,297 INFO L225 Difference]: With dead ends: 334168 [2021-04-15 03:35:57,297 INFO L226 Difference]: Without dead ends: 333766 [2021-04-15 03:35:57,298 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:35:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333766 states. [2021-04-15 03:36:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333766 to 214179. [2021-04-15 03:36:08,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214179 states, 214178 states have (on average 4.497025838321396) internal successors, (963164), 214178 states have internal predecessors, (963164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214179 states to 214179 states and 963164 transitions. [2021-04-15 03:36:10,670 INFO L78 Accepts]: Start accepts. Automaton has 214179 states and 963164 transitions. Word has length 46 [2021-04-15 03:36:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:36:10,670 INFO L480 AbstractCegarLoop]: Abstraction has 214179 states and 963164 transitions. [2021-04-15 03:36:10,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 214179 states and 963164 transitions. [2021-04-15 03:36:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:36:11,436 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:36:11,436 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:36:11,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-15 03:36:11,436 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:36:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:36:11,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1182515344, now seen corresponding path program 10 times [2021-04-15 03:36:11,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:36:11,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143489573] [2021-04-15 03:36:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:36:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:36:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:36:11,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143489573] [2021-04-15 03:36:11,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:36:11,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:36:11,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244448446] [2021-04-15 03:36:11,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:36:11,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:36:11,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:36:11,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:36:11,503 INFO L87 Difference]: Start difference. First operand 214179 states and 963164 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:36:15,307 INFO L93 Difference]: Finished difference Result 354188 states and 1551857 transitions. [2021-04-15 03:36:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:36:15,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:36:15,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:36:17,969 INFO L225 Difference]: With dead ends: 354188 [2021-04-15 03:36:17,970 INFO L226 Difference]: Without dead ends: 353624 [2021-04-15 03:36:17,970 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:36:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353624 states. [2021-04-15 03:36:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353624 to 224674. [2021-04-15 03:36:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224674 states, 224673 states have (on average 4.434026340503754) internal successors, (996206), 224673 states have internal predecessors, (996206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224674 states to 224674 states and 996206 transitions. [2021-04-15 03:36:30,285 INFO L78 Accepts]: Start accepts. Automaton has 224674 states and 996206 transitions. Word has length 46 [2021-04-15 03:36:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:36:30,285 INFO L480 AbstractCegarLoop]: Abstraction has 224674 states and 996206 transitions. [2021-04-15 03:36:30,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 224674 states and 996206 transitions. [2021-04-15 03:36:32,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:36:32,873 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:36:32,873 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:36:32,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-15 03:36:32,873 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:36:32,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:36:32,874 INFO L82 PathProgramCache]: Analyzing trace with hash -137578290, now seen corresponding path program 11 times [2021-04-15 03:36:32,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:36:32,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816042086] [2021-04-15 03:36:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:36:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:36:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:36:32,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816042086] [2021-04-15 03:36:32,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:36:32,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:36:32,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565708508] [2021-04-15 03:36:32,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:36:32,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:36:32,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:36:32,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:36:32,983 INFO L87 Difference]: Start difference. First operand 224674 states and 996206 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:36:37,004 INFO L93 Difference]: Finished difference Result 313135 states and 1375062 transitions. [2021-04-15 03:36:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:36:37,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:36:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:36:40,459 INFO L225 Difference]: With dead ends: 313135 [2021-04-15 03:36:40,460 INFO L226 Difference]: Without dead ends: 313027 [2021-04-15 03:36:40,460 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:36:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313027 states. [2021-04-15 03:36:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313027 to 222693. [2021-04-15 03:36:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222693 states, 222692 states have (on average 4.4333384225746775) internal successors, (987269), 222692 states have internal predecessors, (987269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222693 states to 222693 states and 987269 transitions. [2021-04-15 03:36:52,924 INFO L78 Accepts]: Start accepts. Automaton has 222693 states and 987269 transitions. Word has length 46 [2021-04-15 03:36:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:36:52,925 INFO L480 AbstractCegarLoop]: Abstraction has 222693 states and 987269 transitions. [2021-04-15 03:36:52,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 222693 states and 987269 transitions. [2021-04-15 03:36:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:36:54,913 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:36:54,913 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:36:54,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-15 03:36:54,914 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:36:54,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:36:54,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1199161840, now seen corresponding path program 12 times [2021-04-15 03:36:54,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:36:54,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017794178] [2021-04-15 03:36:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:36:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:36:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:36:54,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017794178] [2021-04-15 03:36:54,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:36:54,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-15 03:36:54,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026594198] [2021-04-15 03:36:54,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 03:36:54,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:36:54,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 03:36:54,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:36:54,975 INFO L87 Difference]: Start difference. First operand 222693 states and 987269 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:36:58,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:36:58,827 INFO L93 Difference]: Finished difference Result 317016 states and 1385687 transitions. [2021-04-15 03:36:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 03:36:58,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:36:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:37:00,464 INFO L225 Difference]: With dead ends: 317016 [2021-04-15 03:37:00,464 INFO L226 Difference]: Without dead ends: 316890 [2021-04-15 03:37:00,465 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 50.1ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-04-15 03:37:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316890 states. [2021-04-15 03:37:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316890 to 230772. [2021-04-15 03:37:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230772 states, 230771 states have (on average 4.403451906868714) internal successors, (1016189), 230771 states have internal predecessors, (1016189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230772 states to 230772 states and 1016189 transitions. [2021-04-15 03:37:13,719 INFO L78 Accepts]: Start accepts. Automaton has 230772 states and 1016189 transitions. Word has length 46 [2021-04-15 03:37:13,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:37:13,719 INFO L480 AbstractCegarLoop]: Abstraction has 230772 states and 1016189 transitions. [2021-04-15 03:37:13,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 230772 states and 1016189 transitions. [2021-04-15 03:37:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:37:14,663 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:37:14,663 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:37:14,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-15 03:37:14,663 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:37:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:37:14,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1431325544, now seen corresponding path program 13 times [2021-04-15 03:37:14,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:37:14,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578180157] [2021-04-15 03:37:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:37:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:37:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:37:14,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578180157] [2021-04-15 03:37:14,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:37:14,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:37:14,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710215767] [2021-04-15 03:37:14,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 03:37:14,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:37:14,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 03:37:14,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:37:14,698 INFO L87 Difference]: Start difference. First operand 230772 states and 1016189 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:37:19,292 INFO L93 Difference]: Finished difference Result 408478 states and 1765876 transitions. [2021-04-15 03:37:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 03:37:19,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:37:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:37:23,636 INFO L225 Difference]: With dead ends: 408478 [2021-04-15 03:37:23,636 INFO L226 Difference]: Without dead ends: 407788 [2021-04-15 03:37:23,636 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:37:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407788 states. [2021-04-15 03:37:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407788 to 229608. [2021-04-15 03:37:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229608 states, 229607 states have (on average 4.399726489174982) internal successors, (1010208), 229607 states have internal predecessors, (1010208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229608 states to 229608 states and 1010208 transitions. [2021-04-15 03:37:37,359 INFO L78 Accepts]: Start accepts. Automaton has 229608 states and 1010208 transitions. Word has length 46 [2021-04-15 03:37:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:37:37,360 INFO L480 AbstractCegarLoop]: Abstraction has 229608 states and 1010208 transitions. [2021-04-15 03:37:37,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 229608 states and 1010208 transitions. [2021-04-15 03:37:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:37:39,249 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:37:39,249 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:37:39,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-15 03:37:39,250 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:37:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:37:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1564427950, now seen corresponding path program 14 times [2021-04-15 03:37:39,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:37:39,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546512740] [2021-04-15 03:37:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:37:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:37:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:37:39,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546512740] [2021-04-15 03:37:39,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:37:39,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:37:39,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619769794] [2021-04-15 03:37:39,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 03:37:39,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:37:39,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 03:37:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:37:39,287 INFO L87 Difference]: Start difference. First operand 229608 states and 1010208 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:43,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:37:43,300 INFO L93 Difference]: Finished difference Result 402139 states and 1737491 transitions. [2021-04-15 03:37:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 03:37:43,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:37:43,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:37:46,149 INFO L225 Difference]: With dead ends: 402139 [2021-04-15 03:37:46,149 INFO L226 Difference]: Without dead ends: 401305 [2021-04-15 03:37:46,149 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:37:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401305 states. [2021-04-15 03:37:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401305 to 225477. [2021-04-15 03:37:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225477 states, 225476 states have (on average 4.391088186769323) internal successors, (990085), 225476 states have internal predecessors, (990085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225477 states to 225477 states and 990085 transitions. [2021-04-15 03:37:58,448 INFO L78 Accepts]: Start accepts. Automaton has 225477 states and 990085 transitions. Word has length 46 [2021-04-15 03:37:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:37:58,448 INFO L480 AbstractCegarLoop]: Abstraction has 225477 states and 990085 transitions. [2021-04-15 03:37:58,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:37:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 225477 states and 990085 transitions. [2021-04-15 03:38:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:38:00,206 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:38:00,206 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:38:00,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-04-15 03:38:00,207 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:38:00,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:38:00,207 INFO L82 PathProgramCache]: Analyzing trace with hash 136450120, now seen corresponding path program 15 times [2021-04-15 03:38:00,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:38:00,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986473399] [2021-04-15 03:38:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:38:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:38:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:38:00,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986473399] [2021-04-15 03:38:00,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:38:00,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 03:38:00,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659339798] [2021-04-15 03:38:00,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 03:38:00,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:38:00,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 03:38:00,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-15 03:38:00,265 INFO L87 Difference]: Start difference. First operand 225477 states and 990085 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:38:03,972 INFO L93 Difference]: Finished difference Result 357749 states and 1533942 transitions. [2021-04-15 03:38:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 03:38:03,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:38:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:38:05,880 INFO L225 Difference]: With dead ends: 357749 [2021-04-15 03:38:05,881 INFO L226 Difference]: Without dead ends: 357005 [2021-04-15 03:38:05,881 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:38:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357005 states. [2021-04-15 03:38:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357005 to 221600. [2021-04-15 03:38:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221600 states, 221599 states have (on average 4.303606965735405) internal successors, (953675), 221599 states have internal predecessors, (953675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221600 states to 221600 states and 953675 transitions. [2021-04-15 03:38:19,512 INFO L78 Accepts]: Start accepts. Automaton has 221600 states and 953675 transitions. Word has length 46 [2021-04-15 03:38:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:38:19,514 INFO L480 AbstractCegarLoop]: Abstraction has 221600 states and 953675 transitions. [2021-04-15 03:38:19,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 221600 states and 953675 transitions. [2021-04-15 03:38:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:38:20,638 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:38:20,638 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:38:20,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-04-15 03:38:20,639 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:38:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:38:20,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1139991830, now seen corresponding path program 16 times [2021-04-15 03:38:20,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:38:20,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740464968] [2021-04-15 03:38:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:38:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:38:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:38:20,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740464968] [2021-04-15 03:38:20,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:38:20,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 03:38:20,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894831931] [2021-04-15 03:38:20,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 03:38:20,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:38:20,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 03:38:20,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:38:20,779 INFO L87 Difference]: Start difference. First operand 221600 states and 953675 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:25,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:38:25,455 INFO L93 Difference]: Finished difference Result 336923 states and 1433090 transitions. [2021-04-15 03:38:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 03:38:25,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:38:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:38:28,969 INFO L225 Difference]: With dead ends: 336923 [2021-04-15 03:38:28,969 INFO L226 Difference]: Without dead ends: 336259 [2021-04-15 03:38:28,970 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:38:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336259 states. [2021-04-15 03:38:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336259 to 215864. [2021-04-15 03:38:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215864 states, 215863 states have (on average 4.294571093702951) internal successors, (927039), 215863 states have internal predecessors, (927039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215864 states to 215864 states and 927039 transitions. [2021-04-15 03:38:39,740 INFO L78 Accepts]: Start accepts. Automaton has 215864 states and 927039 transitions. Word has length 46 [2021-04-15 03:38:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:38:39,740 INFO L480 AbstractCegarLoop]: Abstraction has 215864 states and 927039 transitions. [2021-04-15 03:38:39,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 215864 states and 927039 transitions. [2021-04-15 03:38:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:38:40,311 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:38:40,311 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:38:40,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-04-15 03:38:40,311 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:38:40,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:38:40,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1171918840, now seen corresponding path program 17 times [2021-04-15 03:38:40,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:38:40,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824884342] [2021-04-15 03:38:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:38:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:38:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:38:40,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824884342] [2021-04-15 03:38:40,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:38:40,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:38:40,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204627938] [2021-04-15 03:38:40,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:38:40,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:38:40,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:38:40,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:38:40,359 INFO L87 Difference]: Start difference. First operand 215864 states and 927039 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:38:43,414 INFO L93 Difference]: Finished difference Result 327305 states and 1358680 transitions. [2021-04-15 03:38:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:38:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:38:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:38:45,483 INFO L225 Difference]: With dead ends: 327305 [2021-04-15 03:38:45,484 INFO L226 Difference]: Without dead ends: 325001 [2021-04-15 03:38:45,484 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-04-15 03:38:46,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325001 states. [2021-04-15 03:38:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325001 to 215028. [2021-04-15 03:38:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215028 states, 215027 states have (on average 4.179335618317699) internal successors, (898670), 215027 states have internal predecessors, (898670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215028 states to 215028 states and 898670 transitions. [2021-04-15 03:38:55,238 INFO L78 Accepts]: Start accepts. Automaton has 215028 states and 898670 transitions. Word has length 46 [2021-04-15 03:38:55,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:38:55,238 INFO L480 AbstractCegarLoop]: Abstraction has 215028 states and 898670 transitions. [2021-04-15 03:38:55,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 215028 states and 898670 transitions. [2021-04-15 03:38:56,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:38:56,393 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:38:56,394 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:38:56,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-04-15 03:38:56,394 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:38:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:38:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1000072394, now seen corresponding path program 18 times [2021-04-15 03:38:56,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:38:56,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484239107] [2021-04-15 03:38:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:38:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:38:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:38:56,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484239107] [2021-04-15 03:38:56,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:38:56,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 03:38:56,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954675724] [2021-04-15 03:38:56,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 03:38:56,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:38:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 03:38:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-04-15 03:38:56,498 INFO L87 Difference]: Start difference. First operand 215028 states and 898670 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:38:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:38:59,320 INFO L93 Difference]: Finished difference Result 312942 states and 1290511 transitions. [2021-04-15 03:38:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 03:38:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:38:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:39:01,998 INFO L225 Difference]: With dead ends: 312942 [2021-04-15 03:39:01,998 INFO L226 Difference]: Without dead ends: 312086 [2021-04-15 03:39:01,998 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:39:03,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312086 states. [2021-04-15 03:39:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312086 to 211604. [2021-04-15 03:39:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211604 states, 211603 states have (on average 4.1543976219618814) internal successors, (879083), 211603 states have internal predecessors, (879083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211604 states to 211604 states and 879083 transitions. [2021-04-15 03:39:12,342 INFO L78 Accepts]: Start accepts. Automaton has 211604 states and 879083 transitions. Word has length 46 [2021-04-15 03:39:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:39:12,342 INFO L480 AbstractCegarLoop]: Abstraction has 211604 states and 879083 transitions. [2021-04-15 03:39:12,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 211604 states and 879083 transitions. [2021-04-15 03:39:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:39:12,903 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:39:12,903 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:39:12,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-04-15 03:39:12,904 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:39:12,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:39:12,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1790180840, now seen corresponding path program 19 times [2021-04-15 03:39:12,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:39:12,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099701796] [2021-04-15 03:39:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:39:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:39:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:39:12,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099701796] [2021-04-15 03:39:12,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:39:12,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:39:12,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015973202] [2021-04-15 03:39:12,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:39:12,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:39:12,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:39:12,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:39:12,948 INFO L87 Difference]: Start difference. First operand 211604 states and 879083 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:39:15,893 INFO L93 Difference]: Finished difference Result 310712 states and 1247858 transitions. [2021-04-15 03:39:15,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:39:15,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:39:15,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:39:17,010 INFO L225 Difference]: With dead ends: 310712 [2021-04-15 03:39:17,011 INFO L226 Difference]: Without dead ends: 308214 [2021-04-15 03:39:17,011 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-04-15 03:39:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308214 states. [2021-04-15 03:39:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308214 to 203045. [2021-04-15 03:39:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203045 states, 203044 states have (on average 4.065946297354268) internal successors, (825566), 203044 states have internal predecessors, (825566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203045 states to 203045 states and 825566 transitions. [2021-04-15 03:39:25,642 INFO L78 Accepts]: Start accepts. Automaton has 203045 states and 825566 transitions. Word has length 46 [2021-04-15 03:39:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:39:25,642 INFO L480 AbstractCegarLoop]: Abstraction has 203045 states and 825566 transitions. [2021-04-15 03:39:25,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 203045 states and 825566 transitions. [2021-04-15 03:39:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:39:26,189 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:39:26,189 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:39:26,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-04-15 03:39:26,190 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:39:26,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:39:26,190 INFO L82 PathProgramCache]: Analyzing trace with hash 709518024, now seen corresponding path program 20 times [2021-04-15 03:39:26,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:39:26,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250516548] [2021-04-15 03:39:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:39:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:39:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:39:26,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250516548] [2021-04-15 03:39:26,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:39:26,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:39:26,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463400463] [2021-04-15 03:39:26,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:39:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:39:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:39:26,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:39:26,231 INFO L87 Difference]: Start difference. First operand 203045 states and 825566 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:39:29,024 INFO L93 Difference]: Finished difference Result 288060 states and 1146724 transitions. [2021-04-15 03:39:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:39:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:39:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:39:30,900 INFO L225 Difference]: With dead ends: 288060 [2021-04-15 03:39:30,906 INFO L226 Difference]: Without dead ends: 284768 [2021-04-15 03:39:30,906 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-04-15 03:39:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284768 states. [2021-04-15 03:39:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284768 to 191781. [2021-04-15 03:39:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191781 states, 191780 states have (on average 4.031426634685578) internal successors, (773147), 191780 states have internal predecessors, (773147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191781 states to 191781 states and 773147 transitions. [2021-04-15 03:39:40,064 INFO L78 Accepts]: Start accepts. Automaton has 191781 states and 773147 transitions. Word has length 46 [2021-04-15 03:39:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:39:40,064 INFO L480 AbstractCegarLoop]: Abstraction has 191781 states and 773147 transitions. [2021-04-15 03:39:40,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:40,064 INFO L276 IsEmpty]: Start isEmpty. Operand 191781 states and 773147 transitions. [2021-04-15 03:39:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:39:40,523 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:39:40,523 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:39:40,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-04-15 03:39:40,523 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:39:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:39:40,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1639152820, now seen corresponding path program 21 times [2021-04-15 03:39:40,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:39:40,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17995954] [2021-04-15 03:39:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:39:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:39:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:39:40,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17995954] [2021-04-15 03:39:40,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:39:40,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:39:40,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189659246] [2021-04-15 03:39:40,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:39:40,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:39:40,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:39:40,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:39:40,568 INFO L87 Difference]: Start difference. First operand 191781 states and 773147 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:39:43,453 INFO L93 Difference]: Finished difference Result 289421 states and 1160347 transitions. [2021-04-15 03:39:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:39:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:39:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:39:44,480 INFO L225 Difference]: With dead ends: 289421 [2021-04-15 03:39:44,480 INFO L226 Difference]: Without dead ends: 289101 [2021-04-15 03:39:44,480 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:39:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289101 states. [2021-04-15 03:39:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289101 to 192581. [2021-04-15 03:39:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192581 states, 192580 states have (on average 4.028969778793229) internal successors, (775899), 192580 states have internal predecessors, (775899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192581 states to 192581 states and 775899 transitions. [2021-04-15 03:39:52,882 INFO L78 Accepts]: Start accepts. Automaton has 192581 states and 775899 transitions. Word has length 46 [2021-04-15 03:39:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:39:52,882 INFO L480 AbstractCegarLoop]: Abstraction has 192581 states and 775899 transitions. [2021-04-15 03:39:52,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 192581 states and 775899 transitions. [2021-04-15 03:39:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:39:53,379 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:39:53,380 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:39:53,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-04-15 03:39:53,380 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:39:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:39:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1671079830, now seen corresponding path program 22 times [2021-04-15 03:39:53,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:39:53,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493116379] [2021-04-15 03:39:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:39:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:39:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:39:53,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493116379] [2021-04-15 03:39:53,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:39:53,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:39:53,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575673662] [2021-04-15 03:39:53,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:39:53,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:39:53,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:39:53,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:39:53,423 INFO L87 Difference]: Start difference. First operand 192581 states and 775899 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:39:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:39:56,573 INFO L93 Difference]: Finished difference Result 289605 states and 1158403 transitions. [2021-04-15 03:39:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:39:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:39:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:39:57,711 INFO L225 Difference]: With dead ends: 289605 [2021-04-15 03:39:57,711 INFO L226 Difference]: Without dead ends: 287589 [2021-04-15 03:39:57,711 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:39:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287589 states. [2021-04-15 03:40:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287589 to 190411. [2021-04-15 03:40:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190411 states, 190410 states have (on average 4.019452759834042) internal successors, (765344), 190410 states have internal predecessors, (765344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190411 states to 190411 states and 765344 transitions. [2021-04-15 03:40:06,008 INFO L78 Accepts]: Start accepts. Automaton has 190411 states and 765344 transitions. Word has length 46 [2021-04-15 03:40:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:40:06,008 INFO L480 AbstractCegarLoop]: Abstraction has 190411 states and 765344 transitions. [2021-04-15 03:40:06,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 190411 states and 765344 transitions. [2021-04-15 03:40:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:40:07,538 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:40:07,538 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:40:07,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-04-15 03:40:07,539 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:40:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:40:07,539 INFO L82 PathProgramCache]: Analyzing trace with hash -300064282, now seen corresponding path program 23 times [2021-04-15 03:40:07,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:40:07,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292132645] [2021-04-15 03:40:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:40:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:40:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:40:07,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292132645] [2021-04-15 03:40:07,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:40:07,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-15 03:40:07,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163777366] [2021-04-15 03:40:07,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 03:40:07,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:40:07,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 03:40:07,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:40:07,601 INFO L87 Difference]: Start difference. First operand 190411 states and 765344 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:10,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:40:10,001 INFO L93 Difference]: Finished difference Result 295333 states and 1175576 transitions. [2021-04-15 03:40:10,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 03:40:10,001 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:40:10,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:40:11,733 INFO L225 Difference]: With dead ends: 295333 [2021-04-15 03:40:11,734 INFO L226 Difference]: Without dead ends: 289109 [2021-04-15 03:40:11,734 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-04-15 03:40:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289109 states. [2021-04-15 03:40:18,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289109 to 197773. [2021-04-15 03:40:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197773 states, 197772 states have (on average 3.9816859818376718) internal successors, (787466), 197772 states have internal predecessors, (787466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197773 states to 197773 states and 787466 transitions. [2021-04-15 03:40:20,966 INFO L78 Accepts]: Start accepts. Automaton has 197773 states and 787466 transitions. Word has length 46 [2021-04-15 03:40:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:40:20,966 INFO L480 AbstractCegarLoop]: Abstraction has 197773 states and 787466 transitions. [2021-04-15 03:40:20,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 197773 states and 787466 transitions. [2021-04-15 03:40:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:40:21,664 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:40:21,664 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:40:21,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-04-15 03:40:21,664 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:40:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:40:21,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1536830164, now seen corresponding path program 24 times [2021-04-15 03:40:21,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:40:21,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258183646] [2021-04-15 03:40:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:40:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:40:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:40:21,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258183646] [2021-04-15 03:40:21,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:40:21,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 03:40:21,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807629178] [2021-04-15 03:40:21,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 03:40:21,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:40:21,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 03:40:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-04-15 03:40:21,763 INFO L87 Difference]: Start difference. First operand 197773 states and 787466 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:40:25,205 INFO L93 Difference]: Finished difference Result 299086 states and 1182852 transitions. [2021-04-15 03:40:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 03:40:25,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:40:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:40:27,221 INFO L225 Difference]: With dead ends: 299086 [2021-04-15 03:40:27,222 INFO L226 Difference]: Without dead ends: 298566 [2021-04-15 03:40:27,222 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:40:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298566 states. [2021-04-15 03:40:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298566 to 198823. [2021-04-15 03:40:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198823 states, 198822 states have (on average 3.9825371437768458) internal successors, (791816), 198822 states have internal predecessors, (791816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198823 states to 198823 states and 791816 transitions. [2021-04-15 03:40:36,968 INFO L78 Accepts]: Start accepts. Automaton has 198823 states and 791816 transitions. Word has length 46 [2021-04-15 03:40:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:40:36,968 INFO L480 AbstractCegarLoop]: Abstraction has 198823 states and 791816 transitions. [2021-04-15 03:40:36,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 198823 states and 791816 transitions. [2021-04-15 03:40:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:40:37,558 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:40:37,559 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:40:37,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-04-15 03:40:37,559 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:40:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:40:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash -746721718, now seen corresponding path program 25 times [2021-04-15 03:40:37,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:40:37,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90411504] [2021-04-15 03:40:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:40:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:40:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:40:37,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90411504] [2021-04-15 03:40:37,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:40:37,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:40:37,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264803991] [2021-04-15 03:40:37,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:40:37,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:40:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:40:37,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:40:37,617 INFO L87 Difference]: Start difference. First operand 198823 states and 791816 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:40:40,483 INFO L93 Difference]: Finished difference Result 294761 states and 1162068 transitions. [2021-04-15 03:40:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:40:40,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:40:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:40:41,656 INFO L225 Difference]: With dead ends: 294761 [2021-04-15 03:40:41,657 INFO L226 Difference]: Without dead ends: 292673 [2021-04-15 03:40:41,657 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:40:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292673 states. [2021-04-15 03:40:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292673 to 193969. [2021-04-15 03:40:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193969 states, 193968 states have (on average 3.976387857790976) internal successors, (771292), 193968 states have internal predecessors, (771292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193969 states to 193969 states and 771292 transitions. [2021-04-15 03:40:50,096 INFO L78 Accepts]: Start accepts. Automaton has 193969 states and 771292 transitions. Word has length 46 [2021-04-15 03:40:50,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:40:50,096 INFO L480 AbstractCegarLoop]: Abstraction has 193969 states and 771292 transitions. [2021-04-15 03:40:50,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 193969 states and 771292 transitions. [2021-04-15 03:40:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:40:51,612 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:40:51,612 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:40:51,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-04-15 03:40:51,612 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:40:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:40:51,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1798406086, now seen corresponding path program 26 times [2021-04-15 03:40:51,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:40:51,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093305431] [2021-04-15 03:40:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:40:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:40:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:40:51,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093305431] [2021-04-15 03:40:51,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:40:51,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-15 03:40:51,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091921126] [2021-04-15 03:40:51,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 03:40:51,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:40:51,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 03:40:51,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:40:51,673 INFO L87 Difference]: Start difference. First operand 193969 states and 771292 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:40:54,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:40:54,059 INFO L93 Difference]: Finished difference Result 293030 states and 1142523 transitions. [2021-04-15 03:40:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 03:40:54,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:40:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:40:55,658 INFO L225 Difference]: With dead ends: 293030 [2021-04-15 03:40:55,659 INFO L226 Difference]: Without dead ends: 291722 [2021-04-15 03:40:55,659 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-04-15 03:40:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291722 states. [2021-04-15 03:41:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291722 to 200246. [2021-04-15 03:41:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200246 states, 200245 states have (on average 3.9184449049913854) internal successors, (784649), 200245 states have internal predecessors, (784649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200246 states to 200246 states and 784649 transitions. [2021-04-15 03:41:04,443 INFO L78 Accepts]: Start accepts. Automaton has 200246 states and 784649 transitions. Word has length 46 [2021-04-15 03:41:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:41:04,443 INFO L480 AbstractCegarLoop]: Abstraction has 200246 states and 784649 transitions. [2021-04-15 03:41:04,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 200246 states and 784649 transitions. [2021-04-15 03:41:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:41:05,179 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:41:05,179 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:41:05,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-04-15 03:41:05,179 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:41:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:41:05,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1370272520, now seen corresponding path program 27 times [2021-04-15 03:41:05,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:41:05,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701040336] [2021-04-15 03:41:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:41:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:41:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:41:05,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701040336] [2021-04-15 03:41:05,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:41:05,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:41:05,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189108915] [2021-04-15 03:41:05,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:41:05,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:41:05,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:41:05,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:41:05,287 INFO L87 Difference]: Start difference. First operand 200246 states and 784649 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:41:08,674 INFO L93 Difference]: Finished difference Result 293831 states and 1136141 transitions. [2021-04-15 03:41:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 03:41:08,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:41:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:41:10,531 INFO L225 Difference]: With dead ends: 293831 [2021-04-15 03:41:10,532 INFO L226 Difference]: Without dead ends: 290963 [2021-04-15 03:41:10,532 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:41:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290963 states. [2021-04-15 03:41:18,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290963 to 193515. [2021-04-15 03:41:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193515 states, 193514 states have (on average 3.905562388250979) internal successors, (755781), 193514 states have internal predecessors, (755781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193515 states to 193515 states and 755781 transitions. [2021-04-15 03:41:19,382 INFO L78 Accepts]: Start accepts. Automaton has 193515 states and 755781 transitions. Word has length 46 [2021-04-15 03:41:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:41:19,382 INFO L480 AbstractCegarLoop]: Abstraction has 193515 states and 755781 transitions. [2021-04-15 03:41:19,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 193515 states and 755781 transitions. [2021-04-15 03:41:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:41:20,937 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:41:20,937 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:41:20,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-04-15 03:41:20,937 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:41:20,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:41:20,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2029550822, now seen corresponding path program 28 times [2021-04-15 03:41:20,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:41:20,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838616584] [2021-04-15 03:41:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:41:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:41:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:41:20,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838616584] [2021-04-15 03:41:20,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:41:20,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-15 03:41:20,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135379447] [2021-04-15 03:41:20,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 03:41:20,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:41:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 03:41:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:41:20,988 INFO L87 Difference]: Start difference. First operand 193515 states and 755781 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:41:23,499 INFO L93 Difference]: Finished difference Result 283290 states and 1078797 transitions. [2021-04-15 03:41:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 03:41:23,499 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:41:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:41:25,040 INFO L225 Difference]: With dead ends: 283290 [2021-04-15 03:41:25,040 INFO L226 Difference]: Without dead ends: 280266 [2021-04-15 03:41:25,041 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-04-15 03:41:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280266 states. [2021-04-15 03:41:30,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280266 to 193510. [2021-04-15 03:41:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193510 states, 193509 states have (on average 3.849350676195939) internal successors, (744884), 193509 states have internal predecessors, (744884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193510 states to 193510 states and 744884 transitions. [2021-04-15 03:41:33,159 INFO L78 Accepts]: Start accepts. Automaton has 193510 states and 744884 transitions. Word has length 46 [2021-04-15 03:41:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:41:33,159 INFO L480 AbstractCegarLoop]: Abstraction has 193510 states and 744884 transitions. [2021-04-15 03:41:33,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 193510 states and 744884 transitions. [2021-04-15 03:41:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:41:33,709 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:41:33,710 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:41:33,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-04-15 03:41:33,710 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:41:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:41:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1260957358, now seen corresponding path program 29 times [2021-04-15 03:41:33,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:41:33,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326298518] [2021-04-15 03:41:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:41:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:41:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:41:33,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326298518] [2021-04-15 03:41:33,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:41:33,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-15 03:41:33,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693444249] [2021-04-15 03:41:33,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 03:41:33,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:41:33,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 03:41:33,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:41:33,762 INFO L87 Difference]: Start difference. First operand 193510 states and 744884 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:41:36,235 INFO L93 Difference]: Finished difference Result 270531 states and 1004554 transitions. [2021-04-15 03:41:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 03:41:36,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:41:36,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:41:37,709 INFO L225 Difference]: With dead ends: 270531 [2021-04-15 03:41:37,710 INFO L226 Difference]: Without dead ends: 262632 [2021-04-15 03:41:37,710 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-04-15 03:41:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262632 states. [2021-04-15 03:41:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262632 to 177887. [2021-04-15 03:41:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177887 states, 177886 states have (on average 3.7640623770279844) internal successors, (669574), 177886 states have internal predecessors, (669574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177887 states to 177887 states and 669574 transitions. [2021-04-15 03:41:44,632 INFO L78 Accepts]: Start accepts. Automaton has 177887 states and 669574 transitions. Word has length 46 [2021-04-15 03:41:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:41:44,632 INFO L480 AbstractCegarLoop]: Abstraction has 177887 states and 669574 transitions. [2021-04-15 03:41:44,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 177887 states and 669574 transitions. [2021-04-15 03:41:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:41:45,788 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:41:45,788 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:41:45,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-04-15 03:41:45,788 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:41:45,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:41:45,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1334758820, now seen corresponding path program 30 times [2021-04-15 03:41:45,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:41:45,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964007853] [2021-04-15 03:41:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:41:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:41:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:41:45,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964007853] [2021-04-15 03:41:45,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:41:45,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:41:45,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118652232] [2021-04-15 03:41:45,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:41:45,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:41:45,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:41:45,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:41:45,836 INFO L87 Difference]: Start difference. First operand 177887 states and 669574 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:48,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:41:48,301 INFO L93 Difference]: Finished difference Result 248384 states and 919697 transitions. [2021-04-15 03:41:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 03:41:48,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:41:48,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:41:49,769 INFO L225 Difference]: With dead ends: 248384 [2021-04-15 03:41:49,770 INFO L226 Difference]: Without dead ends: 248064 [2021-04-15 03:41:49,771 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:41:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248064 states. [2021-04-15 03:41:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248064 to 177855. [2021-04-15 03:41:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177855 states, 177854 states have (on average 3.7614110450144502) internal successors, (668982), 177854 states have internal predecessors, (668982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177855 states to 177855 states and 668982 transitions. [2021-04-15 03:41:57,431 INFO L78 Accepts]: Start accepts. Automaton has 177855 states and 668982 transitions. Word has length 46 [2021-04-15 03:41:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:41:57,431 INFO L480 AbstractCegarLoop]: Abstraction has 177855 states and 668982 transitions. [2021-04-15 03:41:57,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:41:57,431 INFO L276 IsEmpty]: Start isEmpty. Operand 177855 states and 668982 transitions. [2021-04-15 03:41:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:41:57,889 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:41:57,889 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:41:57,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-04-15 03:41:57,889 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:41:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:41:57,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1029432924, now seen corresponding path program 31 times [2021-04-15 03:41:57,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:41:57,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589453897] [2021-04-15 03:41:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:41:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:41:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:41:57,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589453897] [2021-04-15 03:41:57,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:41:57,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-15 03:41:57,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867473168] [2021-04-15 03:41:57,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-15 03:41:57,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:41:57,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-15 03:41:57,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-04-15 03:41:57,947 INFO L87 Difference]: Start difference. First operand 177855 states and 668982 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:42:00,149 INFO L93 Difference]: Finished difference Result 251976 states and 930539 transitions. [2021-04-15 03:42:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 03:42:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:42:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:42:01,551 INFO L225 Difference]: With dead ends: 251976 [2021-04-15 03:42:01,552 INFO L226 Difference]: Without dead ends: 249960 [2021-04-15 03:42:01,552 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-04-15 03:42:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249960 states. [2021-04-15 03:42:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249960 to 176831. [2021-04-15 03:42:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176831 states, 176830 states have (on average 3.750076344511678) internal successors, (663126), 176830 states have internal predecessors, (663126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176831 states to 176831 states and 663126 transitions. [2021-04-15 03:42:07,875 INFO L78 Accepts]: Start accepts. Automaton has 176831 states and 663126 transitions. Word has length 46 [2021-04-15 03:42:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:42:07,875 INFO L480 AbstractCegarLoop]: Abstraction has 176831 states and 663126 transitions. [2021-04-15 03:42:07,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:07,876 INFO L276 IsEmpty]: Start isEmpty. Operand 176831 states and 663126 transitions. [2021-04-15 03:42:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:42:09,218 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:42:09,219 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:42:09,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-04-15 03:42:09,219 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:42:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:42:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -75273820, now seen corresponding path program 32 times [2021-04-15 03:42:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:42:09,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808904068] [2021-04-15 03:42:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:42:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:42:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:42:09,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808904068] [2021-04-15 03:42:09,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:42:09,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-04-15 03:42:09,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394761183] [2021-04-15 03:42:09,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-15 03:42:09,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:42:09,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-15 03:42:09,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-04-15 03:42:09,302 INFO L87 Difference]: Start difference. First operand 176831 states and 663126 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:42:11,466 INFO L93 Difference]: Finished difference Result 243984 states and 901479 transitions. [2021-04-15 03:42:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 03:42:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:42:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:42:12,328 INFO L225 Difference]: With dead ends: 243984 [2021-04-15 03:42:12,328 INFO L226 Difference]: Without dead ends: 237760 [2021-04-15 03:42:12,329 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 73.4ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-04-15 03:42:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237760 states. [2021-04-15 03:42:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237760 to 173831. [2021-04-15 03:42:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173831 states, 173830 states have (on average 3.735304607950296) internal successors, (649308), 173830 states have internal predecessors, (649308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173831 states to 173831 states and 649308 transitions. [2021-04-15 03:42:19,411 INFO L78 Accepts]: Start accepts. Automaton has 173831 states and 649308 transitions. Word has length 46 [2021-04-15 03:42:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:42:19,412 INFO L480 AbstractCegarLoop]: Abstraction has 173831 states and 649308 transitions. [2021-04-15 03:42:19,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 173831 states and 649308 transitions. [2021-04-15 03:42:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:42:19,878 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:42:19,878 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:42:19,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-04-15 03:42:19,878 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:42:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:42:19,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1508962954, now seen corresponding path program 33 times [2021-04-15 03:42:19,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:42:19,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762541103] [2021-04-15 03:42:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:42:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:42:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:42:19,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762541103] [2021-04-15 03:42:19,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:42:19,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-15 03:42:19,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076375878] [2021-04-15 03:42:19,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-15 03:42:19,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:42:19,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-15 03:42:19,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:42:19,946 INFO L87 Difference]: Start difference. First operand 173831 states and 649308 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:42:22,282 INFO L93 Difference]: Finished difference Result 243411 states and 895074 transitions. [2021-04-15 03:42:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-04-15 03:42:22,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:42:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 03:42:23,016 INFO L225 Difference]: With dead ends: 243411 [2021-04-15 03:42:23,016 INFO L226 Difference]: Without dead ends: 233779 [2021-04-15 03:42:23,017 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-04-15 03:42:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233779 states. [2021-04-15 03:42:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233779 to 176360. [2021-04-15 03:42:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176360 states, 176359 states have (on average 3.7175307185910555) internal successors, (655620), 176359 states have internal predecessors, (655620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176360 states to 176360 states and 655620 transitions. [2021-04-15 03:42:29,585 INFO L78 Accepts]: Start accepts. Automaton has 176360 states and 655620 transitions. Word has length 46 [2021-04-15 03:42:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 03:42:29,586 INFO L480 AbstractCegarLoop]: Abstraction has 176360 states and 655620 transitions. [2021-04-15 03:42:29,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 176360 states and 655620 transitions. [2021-04-15 03:42:30,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 03:42:30,008 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 03:42:30,008 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 03:42:30,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-04-15 03:42:30,008 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-15 03:42:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 03:42:30,008 INFO L82 PathProgramCache]: Analyzing trace with hash 61777796, now seen corresponding path program 34 times [2021-04-15 03:42:30,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 03:42:30,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484404221] [2021-04-15 03:42:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 03:42:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 03:42:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 03:42:30,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484404221] [2021-04-15 03:42:30,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 03:42:30,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 03:42:30,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576204831] [2021-04-15 03:42:30,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 03:42:30,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 03:42:30,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 03:42:30,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-04-15 03:42:30,056 INFO L87 Difference]: Start difference. First operand 176360 states and 655620 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 03:42:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 03:42:32,762 INFO L93 Difference]: Finished difference Result 252502 states and 922596 transitions. [2021-04-15 03:42:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 03:42:32,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 03:42:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2021-04-15 03:42:34,422 INFO L225 Difference]: With dead ends: 252502 [2021-04-15 03:42:34,423 INFO L226 Difference]: Without dead ends: 252270 [2021-04-15 03:42:34,423 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-04-15 03:42:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252270 states. [2021-04-15 03:42:35,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-04-15 03:42:35,391 WARN L545 AbstractCegarLoop]: Verification canceled [2021-04-15 03:42:35,394 WARN L224 ceAbstractionStarter]: Timeout [2021-04-15 03:42:35,395 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 03:42:35 BasicIcfg [2021-04-15 03:42:35,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 03:42:35,395 INFO L168 Benchmark]: Toolchain (without parser) took 562561.07 ms. Allocated memory was 329.3 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 309.6 MB in the beginning and 13.8 GB in the end (delta: -13.5 GB). Peak memory consumption was 8.4 GB. Max. memory is 16.0 GB. [2021-04-15 03:42:35,396 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 329.3 MB. Free memory was 310.9 MB in the beginning and 310.8 MB in the end (delta: 69.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 03:42:35,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.44 ms. Allocated memory is still 329.3 MB. Free memory was 309.6 MB in the beginning and 308.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 03:42:35,396 INFO L168 Benchmark]: Boogie Preprocessor took 19.29 ms. Allocated memory is still 329.3 MB. Free memory was 308.1 MB in the beginning and 307.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 03:42:35,396 INFO L168 Benchmark]: RCFGBuilder took 325.44 ms. Allocated memory is still 329.3 MB. Free memory was 307.1 MB in the beginning and 290.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-04-15 03:42:35,396 INFO L168 Benchmark]: TraceAbstraction took 562185.84 ms. Allocated memory was 329.3 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 290.2 MB in the beginning and 13.8 GB in the end (delta: -13.5 GB). Peak memory consumption was 8.4 GB. Max. memory is 16.0 GB. [2021-04-15 03:42:35,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 329.3 MB. Free memory was 310.9 MB in the beginning and 310.8 MB in the end (delta: 69.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.44 ms. Allocated memory is still 329.3 MB. Free memory was 309.6 MB in the beginning and 308.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.29 ms. Allocated memory is still 329.3 MB. Free memory was 308.1 MB in the beginning and 307.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 325.44 ms. Allocated memory is still 329.3 MB. Free memory was 307.1 MB in the beginning and 290.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 562185.84 ms. Allocated memory was 329.3 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 290.2 MB in the beginning and 13.8 GB in the end (delta: -13.5 GB). Peak memory consumption was 8.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 110). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 561993.3ms, OverallIterations: 34, TraceHistogramMax: 1, EmptinessCheckTime: 34098.7ms, AutomataDifference: 174301.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24514.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3453 SDtfs, 5425 SDslu, 12007 SDs, 0 SdLazy, 11989 SolverSat, 2079 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5736.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 449 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1531.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230772occurred in iteration=12, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 326157.8ms AutomataMinimizationTime, 34 MinimizatonAttempts, 3225564 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 98.9ms SsaConstructionTime, 455.4ms SatisfiabilityAnalysisTime, 2016.9ms InterpolantComputationTime, 1564 NumberOfCodeBlocks, 1564 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1530 ConstructedInterpolants, 0 QuantifiedInterpolants, 4482 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown