/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 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 17:20:01,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 17:20:01,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 17:20:01,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 17:20:01,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 17:20:01,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 17:20:01,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 17:20:01,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 17:20:01,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 17:20:01,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 17:20:01,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 17:20:01,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 17:20:01,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 17:20:01,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 17:20:01,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 17:20:01,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 17:20:01,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 17:20:01,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 17:20:01,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 17:20:01,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 17:20:01,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 17:20:01,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 17:20:01,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 17:20:01,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 17:20:01,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 17:20:01,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 17:20:01,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 17:20:01,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 17:20:01,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 17:20:01,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-16 17:20:01,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 17:20:01,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 17:20:01,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 17:20:01,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 17:20:01,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 17:20:01,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 17:20:01,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 17:20:01,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 17:20:01,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 17:20:01,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 17:20:01,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 17:20:01,707 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 [2021-06-16 17:20:01,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 17:20:01,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 17:20:01,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 17:20:01,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 17:20:01,730 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 17:20:01,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 17:20:01,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 17:20:01,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 17:20:01,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 17:20:01,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 17:20:01,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 17:20:01,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 17:20:01,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 17:20:01,731 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 17:20:01,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 17:20:01,731 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 17:20:01,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 17:20:01,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 17:20:01,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 17:20:01,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 17:20:01,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 17:20:01,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 17:20:01,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 17:20:01,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 17:20:01,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 17:20:01,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 17:20:01,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 17:20:01,733 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 17:20:01,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 17:20:01,733 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 17:20:01,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 17:20:02,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 17:20:02,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 17:20:02,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 17:20:02,080 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 17:20:02,081 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 17:20:02,082 INFO L432 ainManager$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 [2021-06-16 17:20:02,082 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-7.wvr.bpl' [2021-06-16 17:20:02,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 17:20:02,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 17:20:02,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 17:20:02,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 17:20:02,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 17:20:02,173 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 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,179 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 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 17:20:02,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 17:20:02,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 17:20:02,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 17:20:02,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/1) ... [2021-06-16 17:20:02,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 17:20:02,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 17:20:02,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 17:20:02,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 17:20:02,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (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 [2021-06-16 17:20:02,288 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 17:20:02,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 17:20:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 17:20:02,291 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 17:20:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 17:20:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 17:20:02,291 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 17:20:02,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 17:20:02,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 17:20:02,292 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-16 17:20:02,292 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 17:20:02,292 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 17:20:02,293 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-16 17:20:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-16 17:20:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-16 17:20:02,294 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-16 17:20:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-16 17:20:02,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-16 17:20:02,295 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-16 17:20:02,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-16 17:20:02,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-16 17:20:02,296 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2021-06-16 17:20:02,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2021-06-16 17:20:02,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2021-06-16 17:20:02,298 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 17:20:02,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 17:20:02,536 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 17:20:02,538 INFO L202 PluginConnector]: Adding new model ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:20:02 BoogieIcfgContainer [2021-06-16 17:20:02,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 17:20:02,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 17:20:02,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 17:20:02,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 17:20:02,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 05:20:02" (1/2) ... [2021-06-16 17:20:02,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262150fe and model type ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 05:20:02, skipping insertion in model container [2021-06-16 17:20:02,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-7.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 05:20:02" (2/2) ... [2021-06-16 17:20:02,545 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-7.wvr.bpl [2021-06-16 17:20:02,550 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 17:20:02,551 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 17:20:02,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 17:20:02,552 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 17:20:02,653 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2021-06-16 17:20:02,672 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-06-16 17:20:02,699 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 17:20:02,699 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 17:20:02,699 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 17:20:02,699 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 17:20:02,699 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 17:20:02,700 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 17:20:02,700 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 17:20:02,700 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 17:26:46,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 447902 states, 354589 states have (on average 3.306698741359715) internal successors, (1172519), 447901 states have internal predecessors, (1172519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:26:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 17:26:51,205 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:26:51,206 INFO L472 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] [2021-06-16 17:26:51,206 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]=== [2021-06-16 17:26:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:26:51,221 INFO L82 PathProgramCache]: Analyzing trace with hash -2006964773, now seen corresponding path program 1 times [2021-06-16 17:26:51,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:26:51,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346361287] [2021-06-16 17:26:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:26:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:26:51,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:26:51,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:26:51,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:26:51,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:26:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:26:51,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:26:51,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346361287] [2021-06-16 17:26:51,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346361287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:26:51,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:26:51,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 17:26:51,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333553701] [2021-06-16 17:26:51,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 17:26:51,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:26:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 17:26:51,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-16 17:26:52,700 INFO L87 Difference]: Start difference. First operand has 447902 states, 354589 states have (on average 3.306698741359715) internal successors, (1172519), 447901 states have internal predecessors, (1172519), 0 states have call successors, (0), 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) [2021-06-16 17:27:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:27:06,911 INFO L93 Difference]: Finished difference Result 1387677 states and 3689456 transitions. [2021-06-16 17:27:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 17:27:06,913 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 [2021-06-16 17:27:06,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:27:11,723 INFO L225 Difference]: With dead ends: 1387677 [2021-06-16 17:27:11,723 INFO L226 Difference]: Without dead ends: 723205 [2021-06-16 17:27:11,725 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 320.4ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-16 17:27:20,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723205 states. [2021-06-16 17:27:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723205 to 295869. [2021-06-16 17:27:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295869 states, 295868 states have (on average 3.3004988711182013) internal successors, (976512), 295868 states have internal predecessors, (976512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:27:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295869 states to 295869 states and 976512 transitions. [2021-06-16 17:27:45,015 INFO L78 Accepts]: Start accepts. Automaton has 295869 states and 976512 transitions. Word has length 53 [2021-06-16 17:27:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:27:45,017 INFO L482 AbstractCegarLoop]: Abstraction has 295869 states and 976512 transitions. [2021-06-16 17:27:45,017 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) [2021-06-16 17:27:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 295869 states and 976512 transitions. [2021-06-16 17:27:46,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 17:27:46,271 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:27:46,271 INFO L472 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] [2021-06-16 17:27:46,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 17:27:46,272 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]=== [2021-06-16 17:27:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:27:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash 986213337, now seen corresponding path program 2 times [2021-06-16 17:27:46,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:27:46,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095888330] [2021-06-16 17:27:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:27:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:27:46,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:27:46,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:27:46,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:27:46,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:27:46,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:27:46,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:27:46,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:27:46,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:27:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:27:46,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:27:46,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095888330] [2021-06-16 17:27:46,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095888330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:27:46,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:27:46,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 17:27:46,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881232360] [2021-06-16 17:27:46,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 17:27:46,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:27:46,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 17:27:46,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-16 17:27:46,362 INFO L87 Difference]: Start difference. First operand 295869 states and 976512 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) [2021-06-16 17:27:49,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 17:27:49,294 INFO L93 Difference]: Finished difference Result 301711 states and 994636 transitions. [2021-06-16 17:27:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-16 17:27:49,301 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 53 [2021-06-16 17:27:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 17:27:51,282 INFO L225 Difference]: With dead ends: 301711 [2021-06-16 17:27:51,282 INFO L226 Difference]: Without dead ends: 301711 [2021-06-16 17:27:51,283 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:27:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301711 states. [2021-06-16 17:28:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301711 to 301063. [2021-06-16 17:28:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301063 states, 301062 states have (on average 3.2993635862380506) internal successors, (993313), 301062 states have internal predecessors, (993313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 17:28:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301063 states to 301063 states and 993313 transitions. [2021-06-16 17:28:07,934 INFO L78 Accepts]: Start accepts. Automaton has 301063 states and 993313 transitions. Word has length 53 [2021-06-16 17:28:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 17:28:07,934 INFO L482 AbstractCegarLoop]: Abstraction has 301063 states and 993313 transitions. [2021-06-16 17:28:07,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has 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) [2021-06-16 17:28:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 301063 states and 993313 transitions. [2021-06-16 17:28:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 17:28:08,769 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 17:28:08,769 INFO L472 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] [2021-06-16 17:28:08,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 17:28:08,770 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-16 17:28:08,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 17:28:08,770 INFO L82 PathProgramCache]: Analyzing trace with hash -890641159, now seen corresponding path program 3 times [2021-06-16 17:28:08,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 17:28:08,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160804826] [2021-06-16 17:28:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 17:28:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 17:28:08,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:28:08,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 17:28:08,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:28:08,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:28:08,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:28:08,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:28:08,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:28:08,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-16 17:28:08,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 17:28:08,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 17:28:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 17:28:08,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 17:28:08,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160804826] [2021-06-16 17:28:08,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160804826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 17:28:08,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 17:28:08,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 17:28:08,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103381140] [2021-06-16 17:28:08,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 17:28:08,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 17:28:08,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 17:28:08,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-16 17:28:08,839 INFO L87 Difference]: Start difference. First operand 301063 states and 993313 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 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)