/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-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-17 13:17:30,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 13:17:30,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 13:17:30,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-17 13:17:30,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-17 13:17:30,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-17 13:17:30,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-17 13:17:30,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-17 13:17:30,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-17 13:17:30,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-17 13:17:30,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-17 13:17:30,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-17 13:17:30,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 13:17:30,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 13:17:30,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 13:17:30,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 13:17:30,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 13:17:30,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 13:17:30,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 13:17:30,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 13:17:30,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 13:17:30,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 13:17:30,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 13:17:30,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 13:17:30,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-17 13:17:30,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-17 13:17:30,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-17 13:17:30,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-17 13:17:30,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-17 13:17:30,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-17 13:17:30,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-17 13:17:30,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-17 13:17:30,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-17 13:17:30,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-17 13:17:30,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-17 13:17:30,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-17 13:17:30,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-17 13:17:30,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-17 13:17:30,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-17 13:17:30,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-17 13:17:30,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-17 13:17:30,158 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-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random42.epf [2021-06-17 13:17:30,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 13:17:30,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 13:17:30,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 13:17:30,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 13:17:30,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 13:17:30,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 13:17:30,181 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 13:17:30,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 13:17:30,182 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 13:17:30,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 13:17:30,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 13:17:30,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 13:17:30,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 13:17:30,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 13:17:30,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 13:17:30,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 13:17:30,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 13:17:30,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 13:17:30,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 13:17:30,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 13:17:30,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 13:17:30,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 13:17:30,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 13:17:30,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 13:17:30,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 13:17:30,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 13:17:30,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 13:17:30,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 13:17:30,184 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-17 13:17:30,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 13:17:30,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 13:17:30,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 13:17:30,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 13:17:30,185 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-17 13:17:30,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-17 13:17:30,185 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 13:17:30,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 13:17:30,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 13:17:30,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 13:17:30,450 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 13:17:30,451 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 13:17:30,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-2.wvr.bpl [2021-06-17 13:17:30,451 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-2.wvr.bpl' [2021-06-17 13:17:30,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 13:17:30,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 13:17:30,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 13:17:30,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 13:17:30,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 13:17:30,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 13:17:30,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 13:17:30,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 13:17:30,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 13:17:30,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/1) ... [2021-06-17 13:17:30,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 13:17:30,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 13:17:30,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 13:17:30,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 13:17:30,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (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 [2021-06-17 13:17:30,584 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-17 13:17:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-17 13:17:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-17 13:17:30,585 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-17 13:17:30,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-17 13:17:30,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-17 13:17:30,585 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 13:17:30,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 13:17:30,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 13:17:30,587 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-17 13:17:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-17 13:17:30,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-17 13:17:30,587 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-17 13:17:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-17 13:17:30,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-17 13:17:30,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-17 13:17:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-17 13:17:30,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-17 13:17:30,588 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-17 13:17:30,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-17 13:17:30,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-17 13:17:30,589 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-17 13:17:30,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 13:17:30,795 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-17 13:17:30,796 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2021-06-17 13:17:30,796 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2021-06-17 13:17:30,797 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread5EXIT is neither atomic block end nor error location. [2021-06-17 13:17:30,797 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread6EXIT is neither atomic block end nor error location. [2021-06-17 13:17:30,798 INFO L202 PluginConnector]: Adding new model parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 01:17:30 BoogieIcfgContainer [2021-06-17 13:17:30,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 13:17:30,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 13:17:30,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 13:17:30,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 13:17:30,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 01:17:30" (1/2) ... [2021-06-17 13:17:30,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676c2b59 and model type parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 01:17:30, skipping insertion in model container [2021-06-17 13:17:30,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 01:17:30" (2/2) ... [2021-06-17 13:17:30,803 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-sum-2.wvr.bpl [2021-06-17 13:17:30,808 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 13:17:30,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 13:17:30,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-17 13:17:30,809 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 13:17:30,899 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-17 13:17:30,914 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 13:17:30,989 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 13:17:30,989 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 13:17:30,989 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 13:17:30,989 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 13:17:30,989 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 13:17:30,989 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 13:17:30,989 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 13:17:30,990 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4Thread1of1ForFork4======== [2021-06-17 13:17:31,726 INFO L301 ceAbstractionStarter]: Result for error location thread4Thread1of1ForFork4 was SAFE (1/5) [2021-06-17 13:17:31,727 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 13:17:31,737 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 13:17:31,737 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 13:17:31,737 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 13:17:31,737 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 13:17:31,737 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 13:17:31,737 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 13:17:31,737 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 13:17:31,737 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1======== [2021-06-17 13:17:32,106 INFO L301 ceAbstractionStarter]: Result for error location thread1 was SAFE (2/5) [2021-06-17 13:17:32,106 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-06-17 13:17:32,113 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 13:17:32,113 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 13:17:32,113 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 13:17:32,113 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 13:17:32,113 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 13:17:32,113 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 13:17:32,113 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 13:17:32,113 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork1======== Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 13:17:32,399 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork1 was SAFE (3/5) [2021-06-17 13:17:32,400 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 13:17:32,405 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 13:17:32,408 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 13:17:32,408 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 13:17:32,408 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 13:17:32,408 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 13:17:32,409 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 13:17:32,409 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 13:17:32,409 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4======== [2021-06-17 13:17:32,702 INFO L301 ceAbstractionStarter]: Result for error location thread4 was SAFE (4/5) [2021-06-17 13:17:32,703 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 13:17:32,715 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 13:17:32,715 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 13:17:32,715 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 13:17:32,715 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 13:17:32,715 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 13:17:32,715 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 13:17:32,715 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 13:17:32,715 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-17 13:17:32,813 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 13:17:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:17:32,816 INFO L82 PathProgramCache]: Analyzing trace with hash -429509611, now seen corresponding path program 1 times [2021-06-17 13:17:32,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:17:32,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671568364] [2021-06-17 13:17:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:17:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:32,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:17:32,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671568364] [2021-06-17 13:17:32,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671568364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:32,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646695584] [2021-06-17 13:17:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:33,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-17 13:17:33,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:17:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:33,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646695584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 13:17:33,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-17 13:17:33,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2021-06-17 13:17:33,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218579723] [2021-06-17 13:17:33,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-17 13:17:33,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:17:33,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-17 13:17:33,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-17 13:17:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:33,215 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:17:33,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:17:33,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:33,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:33,482 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 13:17:33,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:17:33,483 INFO L82 PathProgramCache]: Analyzing trace with hash 808738550, now seen corresponding path program 1 times [2021-06-17 13:17:33,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:17:33,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462821559] [2021-06-17 13:17:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:17:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:33,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:17:33,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462821559] [2021-06-17 13:17:33,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462821559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:33,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434150808] [2021-06-17 13:17:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:33,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-17 13:17:33,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:17:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-17 13:17:33,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434150808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 13:17:33,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-17 13:17:33,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-06-17 13:17:33,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603326753] [2021-06-17 13:17:33,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-17 13:17:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:17:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-17 13:17:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-17 13:17:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:33,701 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:17:33,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:17:33,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:33,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:33,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:33,957 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 13:17:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:17:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1059280279, now seen corresponding path program 2 times [2021-06-17 13:17:33,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:17:33,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161144353] [2021-06-17 13:17:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:17:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:34,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:17:34,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161144353] [2021-06-17 13:17:34,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161144353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:34,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472286913] [2021-06-17 13:17:34,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:34,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 13:17:34,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:17:34,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 41 conjunts are in the unsatisfiable core [2021-06-17 13:17:34,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:17:34,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 13:17:34,849 INFO L354 Elim1Store]: treesize reduction 10, result has 80.4 percent of original size [2021-06-17 13:17:34,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 55 [2021-06-17 13:17:34,866 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-17 13:17:34,873 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 13:17:34,874 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 13:17:34,874 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:22 [2021-06-17 13:17:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:35,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472286913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:35,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:17:35,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-06-17 13:17:35,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069314570] [2021-06-17 13:17:35,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-17 13:17:35,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:17:35,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-17 13:17:35,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-06-17 13:17:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:35,051 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:17:35,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:17:35,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:35,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:35,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 13:17:36,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:36,325 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 13:17:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:17:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash 648245271, now seen corresponding path program 3 times [2021-06-17 13:17:36,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:17:36,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913048637] [2021-06-17 13:17:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:17:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:36,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:17:36,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913048637] [2021-06-17 13:17:36,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913048637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:36,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491077594] [2021-06-17 13:17:36,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:36,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-17 13:17:36,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:17:36,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 56 conjunts are in the unsatisfiable core [2021-06-17 13:17:36,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:17:37,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 13:17:37,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 13:17:37,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 13:17:37,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 13:17:37,378 INFO L354 Elim1Store]: treesize reduction 10, result has 86.3 percent of original size [2021-06-17 13:17:37,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 33 treesize of output 77 [2021-06-17 13:17:37,471 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-17 13:17:37,551 INFO L628 ElimStorePlain]: treesize reduction 265, result has 8.6 percent of original size [2021-06-17 13:17:37,551 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 13:17:37,552 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:25 [2021-06-17 13:17:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:37,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491077594] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:37,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:17:37,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2021-06-17 13:17:37,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914850067] [2021-06-17 13:17:37,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-17 13:17:37,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:17:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-17 13:17:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2021-06-17 13:17:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:37,770 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:17:37,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 32 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:17:37,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:37,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:37,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 13:17:37,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:38,495 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-06-17 13:17:39,097 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-06-17 13:17:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 13:17:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 13:17:39,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:39,744 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 13:17:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:17:39,744 INFO L82 PathProgramCache]: Analyzing trace with hash -171380201, now seen corresponding path program 4 times [2021-06-17 13:17:39,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:17:39,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943307947] [2021-06-17 13:17:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:17:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:40,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:17:40,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943307947] [2021-06-17 13:17:40,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943307947] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:40,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639096568] [2021-06-17 13:17:40,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:40,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 13:17:40,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:17:40,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 65 conjunts are in the unsatisfiable core [2021-06-17 13:17:40,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:17:41,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-06-17 13:17:41,085 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-17 13:17:41,089 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 13:17:41,090 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 13:17:41,090 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:12 [2021-06-17 13:17:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:41,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639096568] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:41,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:17:41,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38 [2021-06-17 13:17:41,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520680401] [2021-06-17 13:17:41,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-17 13:17:41,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:17:41,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-17 13:17:41,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2021-06-17 13:17:41,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:41,217 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:17:41,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:17:41,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:41,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:41,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 13:17:41,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 13:17:41,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 13:17:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 13:17:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-17 13:17:45,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-17 13:17:45,517 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 13:17:45,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:17:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1367882647, now seen corresponding path program 5 times [2021-06-17 13:17:45,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:17:45,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844369729] [2021-06-17 13:17:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:17:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:46,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:17:46,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844369729] [2021-06-17 13:17:46,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844369729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:46,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504211841] [2021-06-17 13:17:46,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:46,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-17 13:17:46,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:17:46,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 77 conjunts are in the unsatisfiable core [2021-06-17 13:17:46,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:17:47,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-17 13:17:47,267 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-17 13:17:47,272 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 13:17:47,272 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 13:17:47,272 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:12 [2021-06-17 13:17:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:47,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504211841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:47,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 13:17:47,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 46 [2021-06-17 13:17:47,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624701644] [2021-06-17 13:17:47,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-06-17 13:17:47,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 13:17:47,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-06-17 13:17:47,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2021-06-17 13:17:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:47,410 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 13:17:47,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 46 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-17 13:17:47,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:47,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:47,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 13:17:47,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 13:17:47,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-17 13:17:47,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 13:17:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 13:17:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 13:17:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 13:17:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 13:17:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-17 13:17:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 13:17:51,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-17 13:17:51,813 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 13:17:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 13:17:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash 555592855, now seen corresponding path program 6 times [2021-06-17 13:17:51,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 13:17:51,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28513279] [2021-06-17 13:17:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 13:17:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 13:17:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-17 13:17:52,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 13:17:52,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28513279] [2021-06-17 13:17:52,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28513279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 13:17:52,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339759678] [2021-06-17 13:17:52,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 13:17:53,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-17 13:17:53,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 13:17:53,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 89 conjunts are in the unsatisfiable core [2021-06-17 13:17:53,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 13:17:54,419 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 129 [2021-06-17 13:17:54,419 INFO L354 Elim1Store]: treesize reduction 64, result has 80.5 percent of original size [2021-06-17 13:17:54,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 53 treesize of output 285 [2021-06-17 13:17:54,778 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 920 DAG size of output: 532 [2021-06-17 13:17:55,012 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 941 DAG size of output: 552 [2021-06-17 13:17:55,463 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 510 DAG size of output: 534 [2021-06-17 13:17:55,885 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 506 DAG size of output: 528 [2021-06-17 13:17:56,050 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 499 DAG size of output: 499 [2021-06-17 13:17:56,635 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 521 [2021-06-17 13:17:56,979 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 467 [2021-06-17 13:17:57,087 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 448 DAG size of output: 448 [2021-06-17 13:17:57,531 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 494 DAG size of output: 414 [2021-06-17 13:17:57,864 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 641 DAG size of output: 540 [2021-06-17 13:17:58,521 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 1009 DAG size of output: 790 [2021-06-17 13:17:59,062 WARN L205 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 1218 DAG size of output: 958 [2021-06-17 13:17:59,880 WARN L205 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 1591 DAG size of output: 1230 [2021-06-17 13:18:01,127 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1829 DAG size of output: 1424 [2021-06-17 13:18:02,799 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 1963 DAG size of output: 1554 [2021-06-17 13:18:04,462 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 1963 DAG size of output: 1554 [2021-06-17 13:18:06,251 WARN L205 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 1969 DAG size of output: 1560 [2021-06-17 13:18:07,861 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 1413 DAG size of output: 1404 [2021-06-17 13:18:09,023 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1287 DAG size of output: 1289 [2021-06-17 13:18:09,414 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 492 [2021-06-17 13:18:09,566 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 437 [2021-06-17 13:18:09,823 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 403 DAG size of output: 435 [2021-06-17 13:18:10,091 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 422 [2021-06-17 13:18:11,040 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 798 DAG size of output: 649 [2021-06-17 13:18:11,398 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 997 DAG size of output: 853 [2021-06-17 13:18:11,799 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 1196 DAG size of output: 1037 [2021-06-17 13:18:12,251 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 1533 DAG size of output: 1331 [2021-06-17 13:18:12,959 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 1761 DAG size of output: 1526 [2021-06-17 13:18:13,939 WARN L205 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 1904 DAG size of output: 1660 [2021-06-17 13:18:14,404 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 517 DAG size of output: 462 [2021-06-17 13:18:15,727 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 2116 DAG size of output: 1848 [2021-06-17 13:18:17,504 WARN L205 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 2402 DAG size of output: 2076 [2021-06-17 13:18:18,339 WARN L205 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 1116 DAG size of output: 1118 [2021-06-17 13:18:18,861 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 877 DAG size of output: 877 [2021-06-17 13:18:19,634 WARN L205 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 735 DAG size of output: 834 [2021-06-17 13:18:22,199 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 2739 DAG size of output: 2464 [2021-06-17 13:18:22,310 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 384 [2021-06-17 13:18:23,537 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 917 DAG size of output: 783 [2021-06-17 13:18:23,825 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 1102 DAG size of output: 924 [2021-06-17 13:18:24,235 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 1303 DAG size of output: 1093 [2021-06-17 13:18:26,320 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 3563 DAG size of output: 3101 [2021-06-17 13:18:26,790 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 474 DAG size of output: 432 [2021-06-17 13:18:27,779 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 995 DAG size of output: 926 [2021-06-17 13:18:28,451 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 1429 DAG size of output: 1303 [2021-06-17 13:18:29,384 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 1826 DAG size of output: 1669 [2021-06-17 13:18:32,725 WARN L205 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 4864 DAG size of output: 4254 [2021-06-17 13:18:38,691 WARN L205 SmtUtils]: Spent 5.93 s on a formula simplification. DAG size of input: 6447 DAG size of output: 5531 [2021-06-17 13:18:38,860 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 422 DAG size of output: 422 [2021-06-17 13:18:38,964 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 391 [2021-06-17 13:18:39,162 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 383 [2021-06-17 13:18:39,345 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 372 [2021-06-17 13:18:39,528 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 375 [2021-06-17 13:18:39,709 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 335 [2021-06-17 13:18:40,189 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 989 DAG size of output: 859 [2021-06-17 13:18:40,563 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 1153 DAG size of output: 1015 [2021-06-17 13:18:41,032 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 1393 DAG size of output: 1211 [2021-06-17 13:18:41,710 WARN L205 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 1593 DAG size of output: 1361 [2021-06-17 13:18:42,637 WARN L205 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 1737 DAG size of output: 1494 [2021-06-17 13:18:43,168 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 489 [2021-06-17 13:18:43,330 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 622 DAG size of output: 540 [2021-06-17 13:18:43,568 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 626 DAG size of output: 542 [2021-06-17 13:18:44,943 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 2038 DAG size of output: 1765 [2021-06-17 13:18:45,394 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 410 [2021-06-17 13:18:45,536 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 480 DAG size of output: 436 [2021-06-17 13:18:47,345 WARN L205 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 2217 DAG size of output: 1927 [2021-06-17 13:18:56,566 WARN L205 SmtUtils]: Spent 9.20 s on a formula simplification. DAG size of input: 7408 DAG size of output: 6358 [2021-06-17 13:19:05,730 WARN L205 SmtUtils]: Spent 9.13 s on a formula simplification. DAG size of input: 7408 DAG size of output: 6358 [2021-06-17 13:19:15,343 WARN L205 SmtUtils]: Spent 9.59 s on a formula simplification. DAG size of input: 7411 DAG size of output: 6361 [2021-06-17 13:19:34,865 WARN L205 SmtUtils]: Spent 19.48 s on a formula simplification. DAG size of input: 6084 DAG size of output: 7441 [2021-06-17 13:19:38,190 WARN L205 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 1836 DAG size of output: 2176 [2021-06-17 13:19:38,567 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 331 [2021-06-17 13:19:39,106 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 639 DAG size of output: 571 [2021-06-17 13:19:39,292 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 759 DAG size of output: 691 [2021-06-17 13:19:39,643 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 909 DAG size of output: 842 [2021-06-17 13:19:40,041 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 1003 DAG size of output: 932