/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-NewStatesSleep-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 00:07:38,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-17 00:07:38,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-17 00:07:38,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-17 00:07:38,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-17 00:07:38,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-17 00:07:38,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-17 00:07:38,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-17 00:07:38,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-17 00:07:38,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-17 00:07:38,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-17 00:07:38,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-17 00:07:38,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-17 00:07:38,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-17 00:07:38,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-17 00:07:38,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-17 00:07:38,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-17 00:07:38,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-17 00:07:38,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-17 00:07:38,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-17 00:07:38,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-17 00:07:38,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-17 00:07:38,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-17 00:07:38,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-17 00:07:38,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-17 00:07:38,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-17 00:07:38,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-17 00:07:38,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-17 00:07:38,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-17 00:07:38,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-17 00:07:38,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-17 00:07:38,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-17 00:07:38,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-17 00:07:38,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-17 00:07:38,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-17 00:07:38,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-17 00:07:38,756 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-NewStatesSleep-NoLbe-Random42.epf [2021-06-17 00:07:38,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-17 00:07:38,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-17 00:07:38,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-17 00:07:38,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-17 00:07:38,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-17 00:07:38,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-17 00:07:38,784 INFO L138 SettingsManager]: * Use SBE=true [2021-06-17 00:07:38,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-17 00:07:38,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-17 00:07:38,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-17 00:07:38,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-17 00:07:38,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-17 00:07:38,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-17 00:07:38,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-17 00:07:38,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-17 00:07:38,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-17 00:07:38,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-17 00:07:38,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-17 00:07:38,798 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-17 00:07:38,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-17 00:07:38,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-17 00:07:39,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-17 00:07:39,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-17 00:07:39,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-17 00:07:39,069 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-17 00:07:39,071 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-17 00:07:39,071 INFO L432 ainManager$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 00:07:39,072 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 00:07:39,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-17 00:07:39,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-17 00:07:39,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-17 00:07:39,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-17 00:07:39,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-17 00:07:39,106 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,111 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-17 00:07:39,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-17 00:07:39,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-17 00:07:39,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-17 00:07:39,123 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,123 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,124 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,124 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,126 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,128 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,129 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 12:07:39" (1/1) ... [2021-06-17 00:07:39,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-17 00:07:39,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-17 00:07:39,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-17 00:07:39,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-17 00:07:39,132 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 12:07:39" (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 00:07:39,187 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-17 00:07:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-17 00:07:39,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-17 00:07:39,187 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-17 00:07:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-17 00:07:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-17 00:07:39,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-17 00:07:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-17 00:07:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-17 00:07:39,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-17 00:07:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-17 00:07:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-17 00:07:39,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-17 00:07:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-17 00:07:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-17 00:07:39,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-17 00:07:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-17 00:07:39,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-17 00:07:39,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-06-17 00:07:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-06-17 00:07:39,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-06-17 00:07:39,190 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 00:07:39,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-17 00:07:39,427 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-17 00:07:39,427 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2021-06-17 00:07:39,428 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2021-06-17 00:07:39,428 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread5EXIT is neither atomic block end nor error location. [2021-06-17 00:07:39,428 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread6EXIT is neither atomic block end nor error location. [2021-06-17 00:07:39,429 INFO L202 PluginConnector]: Adding new model parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 12:07:39 BoogieIcfgContainer [2021-06-17 00:07:39,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-17 00:07:39,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-17 00:07:39,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-17 00:07:39,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-17 00:07:39,433 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 12:07:39" (1/2) ... [2021-06-17 00:07:39,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c56df0c and model type parallel-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 12:07:39, skipping insertion in model container [2021-06-17 00:07:39,433 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 12:07:39" (2/2) ... [2021-06-17 00:07:39,434 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-sum-2.wvr.bpl [2021-06-17 00:07:39,438 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-17 00:07:39,438 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-17 00:07:39,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-17 00:07:39,439 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-17 00:07:39,576 INFO L149 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-06-17 00:07:39,592 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 00:07:39,640 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 00:07:39,640 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 00:07:39,640 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 00:07:39,641 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 00:07:39,641 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 00:07:39,641 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 00:07:39,641 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 00:07:39,641 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4Thread1of1ForFork4======== [2021-06-17 00:07:39,869 INFO L301 ceAbstractionStarter]: Result for error location thread4Thread1of1ForFork4 was SAFE (1/5) [2021-06-17 00:07:39,871 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) [2021-06-17 00:07:39,890 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 00:07:39,890 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 00:07:39,890 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 00:07:39,891 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 00:07:39,891 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 00:07:39,891 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 00:07:39,891 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 00:07:39,891 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1======== Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 00:07:39,962 INFO L301 ceAbstractionStarter]: Result for error location thread1 was SAFE (2/5) [2021-06-17 00:07:39,962 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-17 00:07:39,969 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 00:07:39,970 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 00:07:39,970 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 00:07:39,970 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 00:07:39,970 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 00:07:39,970 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 00:07:39,970 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 00:07:39,970 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork1======== [2021-06-17 00:07:40,071 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork1 was SAFE (3/5) [2021-06-17 00:07:40,071 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 00:07:40,076 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 00:07:40,077 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 00:07:40,077 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 00:07:40,077 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 00:07:40,077 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 00:07:40,077 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 00:07:40,077 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 00:07:40,077 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread4======== [2021-06-17 00:07:40,163 INFO L301 ceAbstractionStarter]: Result for error location thread4 was SAFE (4/5) [2021-06-17 00:07:40,163 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 00:07:40,185 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-17 00:07:40,186 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-17 00:07:40,186 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-17 00:07:40,186 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-17 00:07:40,186 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-17 00:07:40,186 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-17 00:07:40,186 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-17 00:07:40,186 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-17 00:07:40,232 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 00:07:40,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 00:07:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash -429509611, now seen corresponding path program 1 times [2021-06-17 00:07:40,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 00:07:40,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957714638] [2021-06-17 00:07:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 00:07:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:40,375 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 00:07:40,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 00:07:40,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957714638] [2021-06-17 00:07:40,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957714638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:40,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020209421] [2021-06-17 00:07:40,376 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 00:07:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:40,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-17 00:07:40,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 00:07:40,547 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 00:07:40,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020209421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 00:07:40,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-17 00:07:40,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2021-06-17 00:07:40,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674463454] [2021-06-17 00:07:40,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-17 00:07:40,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 00:07:40,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-17 00:07:40,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-17 00:07:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:40,562 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 00:07:40,563 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 00:07:40,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:40,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 00:07:40,797 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 00:07:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 00:07:40,798 INFO L82 PathProgramCache]: Analyzing trace with hash 808738550, now seen corresponding path program 1 times [2021-06-17 00:07:40,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 00:07:40,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150811378] [2021-06-17 00:07:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 00:07:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:40,897 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 00:07:40,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 00:07:40,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150811378] [2021-06-17 00:07:40,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150811378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:40,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075227583] [2021-06-17 00:07:40,898 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 00:07:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:40,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-17 00:07:40,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 00:07:41,017 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 00:07:41,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075227583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-17 00:07:41,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-17 00:07:41,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-06-17 00:07:41,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365220483] [2021-06-17 00:07:41,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-17 00:07:41,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 00:07:41,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-17 00:07:41,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-17 00:07:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:41,020 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 00:07:41,020 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 00:07:41,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:41,020 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:41,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 00:07:41,266 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 00:07:41,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 00:07:41,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1059280279, now seen corresponding path program 2 times [2021-06-17 00:07:41,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 00:07:41,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139807785] [2021-06-17 00:07:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 00:07:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:41,834 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 00:07:41,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 00:07:41,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139807785] [2021-06-17 00:07:41,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139807785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:41,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957591775] [2021-06-17 00:07:41,835 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 00:07:41,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-17 00:07:41,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 00:07:41,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 41 conjunts are in the unsatisfiable core [2021-06-17 00:07:41,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 00:07:42,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 00:07:42,182 INFO L354 Elim1Store]: treesize reduction 10, result has 80.4 percent of original size [2021-06-17 00:07:42,183 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 00:07:42,207 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-17 00:07:42,236 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 00:07:42,238 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 00:07:42,238 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:22 [2021-06-17 00:07:42,407 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 00:07:42,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957591775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:42,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 00:07:42,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-06-17 00:07:42,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090499389] [2021-06-17 00:07:42,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-17 00:07:42,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 00:07:42,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-17 00:07:42,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-06-17 00:07:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:42,409 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 00:07:42,409 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 00:07:42,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:42,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:42,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 00:07:43,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 00:07:43,619 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 00:07:43,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 00:07:43,619 INFO L82 PathProgramCache]: Analyzing trace with hash 648245271, now seen corresponding path program 3 times [2021-06-17 00:07:43,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 00:07:43,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922721329] [2021-06-17 00:07:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 00:07:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:44,218 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 00:07:44,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 00:07:44,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922721329] [2021-06-17 00:07:44,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922721329] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:44,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010452275] [2021-06-17 00:07:44,219 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 00:07:44,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-17 00:07:44,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 00:07:44,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 56 conjunts are in the unsatisfiable core [2021-06-17 00:07:44,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 00:07:44,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 00:07:44,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 00:07:44,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-17 00:07:44,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-17 00:07:44,681 INFO L354 Elim1Store]: treesize reduction 10, result has 86.3 percent of original size [2021-06-17 00:07:44,681 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 00:07:44,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-17 00:07:44,822 INFO L628 ElimStorePlain]: treesize reduction 265, result has 8.6 percent of original size [2021-06-17 00:07:44,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 00:07:44,823 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:25 [2021-06-17 00:07:45,044 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 00:07:45,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010452275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:45,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 00:07:45,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2021-06-17 00:07:45,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011919200] [2021-06-17 00:07:45,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-06-17 00:07:45,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 00:07:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-06-17 00:07:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2021-06-17 00:07:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:45,046 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 00:07:45,046 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 00:07:45,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:45,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:45,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 00:07:45,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-17 00:07:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 00:07:46,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-17 00:07:46,853 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 00:07:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 00:07:46,854 INFO L82 PathProgramCache]: Analyzing trace with hash -171380201, now seen corresponding path program 4 times [2021-06-17 00:07:46,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 00:07:46,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032784951] [2021-06-17 00:07:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 00:07:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:47,601 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 00:07:47,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 00:07:47,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032784951] [2021-06-17 00:07:47,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032784951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:47,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909220930] [2021-06-17 00:07:47,601 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 00:07:47,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-17 00:07:47,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 00:07:47,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 65 conjunts are in the unsatisfiable core [2021-06-17 00:07:47,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 00:07:48,156 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 00:07:48,157 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-17 00:07:48,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 00:07:48,162 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 00:07:48,162 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:12 [2021-06-17 00:07:48,275 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 00:07:48,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909220930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:48,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 00:07:48,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 38 [2021-06-17 00:07:48,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618824741] [2021-06-17 00:07:48,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-06-17 00:07:48,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 00:07:48,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-06-17 00:07:48,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2021-06-17 00:07:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:48,277 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 00:07:48,277 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 00:07:48,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:48,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:48,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-17 00:07:48,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 00:07:48,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 00:07:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 00:07:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-17 00:07:52,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-17 00:07:52,489 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 00:07:52,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 00:07:52,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1367882647, now seen corresponding path program 5 times [2021-06-17 00:07:52,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 00:07:52,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052118145] [2021-06-17 00:07:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 00:07:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:53,501 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 00:07:53,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 00:07:53,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052118145] [2021-06-17 00:07:53,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052118145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:53,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405325656] [2021-06-17 00:07:53,501 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 00:07:53,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-17 00:07:53,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 00:07:53,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 77 conjunts are in the unsatisfiable core [2021-06-17 00:07:53,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 00:07:54,312 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 00:07:54,314 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-17 00:07:54,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-17 00:07:54,320 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-17 00:07:54,320 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:12 [2021-06-17 00:07:54,455 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 00:07:54,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405325656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:54,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-17 00:07:54,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 46 [2021-06-17 00:07:54,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96208843] [2021-06-17 00:07:54,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-06-17 00:07:54,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-17 00:07:54,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-06-17 00:07:54,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2021-06-17 00:07:54,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:54,457 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-17 00:07:54,458 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 00:07:54,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:54,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:54,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-17 00:07:54,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2021-06-17 00:07:54,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2021-06-17 00:07:54,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-17 00:07:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-17 00:07:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-17 00:07:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-17 00:07:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-17 00:07:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-17 00:07:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-17 00:07:58,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-17 00:07:58,576 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-17 00:07:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-17 00:07:58,576 INFO L82 PathProgramCache]: Analyzing trace with hash 555592855, now seen corresponding path program 6 times [2021-06-17 00:07:58,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-17 00:07:58,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928064192] [2021-06-17 00:07:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-17 00:07:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-17 00:07:59,718 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 00:07:59,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-17 00:07:59,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928064192] [2021-06-17 00:07:59,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928064192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-17 00:07:59,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493768624] [2021-06-17 00:07:59,719 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 00:07:59,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-17 00:07:59,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-17 00:07:59,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 89 conjunts are in the unsatisfiable core [2021-06-17 00:07:59,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-17 00:08:01,040 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 129 [2021-06-17 00:08:01,040 INFO L354 Elim1Store]: treesize reduction 64, result has 80.5 percent of original size [2021-06-17 00:08:01,041 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 00:08:01,433 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 920 DAG size of output: 532 [2021-06-17 00:08:01,670 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 941 DAG size of output: 552 [2021-06-17 00:08:02,113 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 510 DAG size of output: 534 [2021-06-17 00:08:02,517 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 506 DAG size of output: 528 [2021-06-17 00:08:02,675 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 499 DAG size of output: 499 [2021-06-17 00:08:03,238 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 521 [2021-06-17 00:08:03,521 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 467 [2021-06-17 00:08:04,125 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 494 DAG size of output: 414 [2021-06-17 00:08:04,434 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 641 DAG size of output: 540 [2021-06-17 00:08:05,018 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 1009 DAG size of output: 790 [2021-06-17 00:08:05,614 WARN L205 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 1218 DAG size of output: 958 [2021-06-17 00:08:06,396 WARN L205 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 1591 DAG size of output: 1230 [2021-06-17 00:08:07,557 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1829 DAG size of output: 1424 [2021-06-17 00:08:09,129 WARN L205 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 1963 DAG size of output: 1554 [2021-06-17 00:08:10,710 WARN L205 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 1963 DAG size of output: 1554 [2021-06-17 00:08:12,399 WARN L205 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 1969 DAG size of output: 1560 [2021-06-17 00:08:13,939 WARN L205 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 1413 DAG size of output: 1404 [2021-06-17 00:08:15,061 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 1287 DAG size of output: 1289 [2021-06-17 00:08:15,425 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 492 [2021-06-17 00:08:15,570 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 437 [2021-06-17 00:08:15,813 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 403 DAG size of output: 435 [2021-06-17 00:08:16,071 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 422 [2021-06-17 00:08:17,350 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 997 DAG size of output: 853 [2021-06-17 00:08:17,731 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 1196 DAG size of output: 1037 [2021-06-17 00:08:18,167 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 1533 DAG size of output: 1331 [2021-06-17 00:08:18,834 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 1761 DAG size of output: 1526 [2021-06-17 00:08:19,783 WARN L205 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 1904 DAG size of output: 1660 [2021-06-17 00:08:20,242 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 517 DAG size of output: 462 [2021-06-17 00:08:21,522 WARN L205 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 2116 DAG size of output: 1848 [2021-06-17 00:08:23,268 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 2402 DAG size of output: 2076 [2021-06-17 00:08:24,038 WARN L205 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 1116 DAG size of output: 1118 [2021-06-17 00:08:24,538 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 877 DAG size of output: 877 [2021-06-17 00:08:25,272 WARN L205 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 735 DAG size of output: 834 [2021-06-17 00:08:27,670 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 2739 DAG size of output: 2464 [2021-06-17 00:08:28,955 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 917 DAG size of output: 783 [2021-06-17 00:08:29,211 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 1102 DAG size of output: 924 [2021-06-17 00:08:29,608 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 1303 DAG size of output: 1093 [2021-06-17 00:08:31,582 WARN L205 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 3563 DAG size of output: 3101 [2021-06-17 00:08:32,015 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 474 DAG size of output: 432 [2021-06-17 00:08:32,936 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 995 DAG size of output: 926 [2021-06-17 00:08:33,596 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 1429 DAG size of output: 1303 [2021-06-17 00:08:34,012 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 623 DAG size of output: 603 [2021-06-17 00:08:34,509 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 1826 DAG size of output: 1669 [2021-06-17 00:08:37,718 WARN L205 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 4864 DAG size of output: 4254 [2021-06-17 00:08:43,504 WARN L205 SmtUtils]: Spent 5.76 s on a formula simplification. DAG size of input: 6447 DAG size of output: 5531 [2021-06-17 00:08:43,665 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 422 DAG size of output: 422 [2021-06-17 00:08:43,944 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 383 [2021-06-17 00:08:44,124 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 372 [2021-06-17 00:08:44,298 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 375 [2021-06-17 00:08:44,492 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 335 [2021-06-17 00:08:44,956 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 989 DAG size of output: 859 [2021-06-17 00:08:45,336 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 1153 DAG size of output: 1015 [2021-06-17 00:08:45,771 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 1393 DAG size of output: 1211 [2021-06-17 00:08:46,419 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 1593 DAG size of output: 1361 [2021-06-17 00:08:47,306 WARN L205 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 1737 DAG size of output: 1494 [2021-06-17 00:08:47,821 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 489 [2021-06-17 00:08:47,984 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 622 DAG size of output: 540 [2021-06-17 00:08:48,214 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 626 DAG size of output: 542 [2021-06-17 00:08:49,541 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 2038 DAG size of output: 1765 [2021-06-17 00:08:50,123 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 480 DAG size of output: 436 [2021-06-17 00:08:51,876 WARN L205 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 2217 DAG size of output: 1927 [2021-06-17 00:09:00,727 WARN L205 SmtUtils]: Spent 8.84 s on a formula simplification. DAG size of input: 7408 DAG size of output: 6358 [2021-06-17 00:09:09,640 WARN L205 SmtUtils]: Spent 8.88 s on a formula simplification. DAG size of input: 7408 DAG size of output: 6358 [2021-06-17 00:09:19,010 WARN L205 SmtUtils]: Spent 9.34 s on a formula simplification. DAG size of input: 7411 DAG size of output: 6361 [2021-06-17 00:09:38,236 WARN L205 SmtUtils]: Spent 19.18 s on a formula simplification. DAG size of input: 6084 DAG size of output: 7441 [2021-06-17 00:09:41,474 WARN L205 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 1836 DAG size of output: 2176 [2021-06-17 00:09:41,827 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 331 [2021-06-17 00:09:42,375 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 639 DAG size of output: 571 [2021-06-17 00:09:42,551 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 759 DAG size of output: 691 [2021-06-17 00:09:42,925 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 909 DAG size of output: 842 [2021-06-17 00:09:43,307 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 1003 DAG size of output: 932