/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:07:13,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:07:13,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:07:13,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 23:07:13,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 23:07:13,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 23:07:13,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 23:07:13,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 23:07:13,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 23:07:13,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 23:07:13,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 23:07:13,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 23:07:13,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:07:13,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:07:13,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:07:13,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:07:13,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:07:13,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:07:13,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:07:13,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:07:13,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:07:13,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:07:13,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:07:13,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:07:13,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 23:07:13,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 23:07:13,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 23:07:13,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 23:07:13,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 23:07:13,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 23:07:13,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 23:07:13,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 23:07:13,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 23:07:13,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 23:07:13,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 23:07:13,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 23:07:13,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 23:07:13,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 23:07:13,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 23:07:13,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 23:07:13,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 23:07:13,703 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-Delay.epf [2021-07-09 23:07:13,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:07:13,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:07:13,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:07:13,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:07:13,732 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:07:13,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:07:13,732 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:07:13,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:07:13,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:07:13,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:07:13,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:07:13,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:07:13,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:07:13,733 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:07:13,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:07:13,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:07:13,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:07:13,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:07:13,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:07:13,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:07:13,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:07:13,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:07:13,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:07:13,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:07:14,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:07:14,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:07:14,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:07:14,089 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:07:14,090 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:07:14,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl [2021-07-09 23:07:14,091 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl' [2021-07-09 23:07:14,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:07:14,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:07:14,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:07:14,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:07:14,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:07:14,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:07:14,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:07:14,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:07:14,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:07:14,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... [2021-07-09 23:07:14,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:07:14,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:07:14,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:07:14,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:07:14,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:07:14,209 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:07:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:07:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:07:14,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:07:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:07:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:07:14,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:07:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:07:14,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:07:14,212 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 23:07:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 23:07:14,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 23:07:14,212 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 23:07:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 23:07:14,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 23:07:14,213 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-07-09 23:07:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-07-09 23:07:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-07-09 23:07:14,214 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-07-09 23:07:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-07-09 23:07:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-07-09 23:07:14,215 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-07-09 23:07:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-07-09 23:07:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-07-09 23:07:14,217 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:07:14,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:07:14,480 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:07:14,481 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:07:14 BoogieIcfgContainer [2021-07-09 23:07:14,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:07:14,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:07:14,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:07:14,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:07:14,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:07:14" (1/2) ... [2021-07-09 23:07:14,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a97e7cb and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:07:14, skipping insertion in model container [2021-07-09 23:07:14,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:07:14" (2/2) ... [2021-07-09 23:07:14,486 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2021-07-09 23:07:14,499 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:07:14,500 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:07:14,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:07:14,500 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:07:14,596 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-07-09 23:07:14,628 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-07-09 23:07:14,669 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:07:14,670 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:07:14,670 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:07:14,670 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:07:14,670 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:07:14,670 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:07:14,670 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:07:14,670 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:07:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 447900 states, 343702 states have (on average 3.7472228849410243) internal successors, (1287928), 447899 states have internal predecessors, (1287928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:07:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 23:07:50,404 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:07:50,404 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:07:50,405 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 23:07:50,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:07:50,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1670187225, now seen corresponding path program 1 times [2021-07-09 23:07:50,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:07:50,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448756340] [2021-07-09 23:07:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:07:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:07:50,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:07:50,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 23:07:50,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:07:50,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:07:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:07:50,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:07:50,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448756340] [2021-07-09 23:07:50,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448756340] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:07:50,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:07:50,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:07:50,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867699448] [2021-07-09 23:07:50,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:07:50,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:07:50,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:07:50,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:07:51,459 INFO L87 Difference]: Start difference. First operand has 447900 states, 343702 states have (on average 3.7472228849410243) internal successors, (1287928), 447899 states have internal predecessors, (1287928), 0 states have call successors, (0), 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 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:08:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:08:05,009 INFO L93 Difference]: Finished difference Result 1234922 states and 3581670 transitions. [2021-07-09 23:08:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:08:05,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-07-09 23:08:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:08:11,685 INFO L225 Difference]: With dead ends: 1234922 [2021-07-09 23:08:11,685 INFO L226 Difference]: Without dead ends: 492721 [2021-07-09 23:08:11,686 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-07-09 23:08:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492721 states. [2021-07-09 23:08:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492721 to 239347. [2021-07-09 23:08:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239347 states, 239346 states have (on average 4.129586456427097) internal successors, (988400), 239346 states have internal predecessors, (988400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:08:42,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239347 states to 239347 states and 988400 transitions. [2021-07-09 23:08:42,819 INFO L78 Accepts]: Start accepts. Automaton has 239347 states and 988400 transitions. Word has length 53 [2021-07-09 23:08:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:08:42,820 INFO L482 AbstractCegarLoop]: Abstraction has 239347 states and 988400 transitions. [2021-07-09 23:08:42,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 23:08:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 239347 states and 988400 transitions. [2021-07-09 23:08:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 23:08:44,520 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:08:44,520 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:08:44,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:08:44,521 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-09 23:08:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:08:44,525 INFO L82 PathProgramCache]: Analyzing trace with hash 819063001, now seen corresponding path program 2 times [2021-07-09 23:08:44,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:08:44,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640264421] [2021-07-09 23:08:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:08:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:08:44,706 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-07-09 23:08:44,706 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-07-09 23:08:44,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:08:44,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:08:44,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:08:44,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:08:44,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:08:44,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:08:44,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:08:44,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-09 23:08:44,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:08:44,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:08:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:08:44,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:08:44,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640264421] [2021-07-09 23:08:44,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640264421] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:08:44,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:08:44,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:08:44,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147714384] [2021-07-09 23:08:44,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 23:08:44,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:08:44,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 23:08:44,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-09 23:08:44,741 INFO L87 Difference]: Start difference. First operand 239347 states and 988400 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)