/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-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 17:51:42,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 17:51:42,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 17:51:42,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 17:51:42,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 17:51:42,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 17:51:42,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 17:51:42,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 17:51:42,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 17:51:42,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 17:51:42,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 17:51:42,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 17:51:42,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 17:51:42,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 17:51:42,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 17:51:42,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 17:51:42,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 17:51:42,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 17:51:42,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 17:51:42,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 17:51:42,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 17:51:42,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 17:51:42,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 17:51:42,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 17:51:42,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 17:51:42,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 17:51:42,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 17:51:42,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 17:51:42,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 17:51:42,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 17:51:42,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 17:51:42,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 17:51:42,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 17:51:42,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 17:51:42,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 17:51:42,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 17:51:42,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 17:51:42,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 17:51:42,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 17:51:42,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 17:51:42,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 17:51:43,006 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-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 17:51:43,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 17:51:43,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 17:51:43,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 17:51:43,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 17:51:43,030 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 17:51:43,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 17:51:43,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 17:51:43,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 17:51:43,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 17:51:43,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 17:51:43,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 17:51:43,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 17:51:43,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:51:43,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 17:51:43,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 17:51:43,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 17:51:43,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 17:51:43,034 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 17:51:43,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 17:51:43,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 17:51:43,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 17:51:43,301 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 17:51:43,303 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 17:51:43,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl [2021-08-13 17:51:43,304 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl' [2021-08-13 17:51:43,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 17:51:43,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 17:51:43,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 17:51:43,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 17:51:43,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 17:51:43,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 17:51:43,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 17:51:43,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 17:51:43,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 17:51:43,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/1) ... [2021-08-13 17:51:43,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 17:51:43,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 17:51:43,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 17:51:43,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 17:51:43,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (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 [2021-08-13 17:51:43,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 17:51:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 17:51:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 17:51:43,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-08-13 17:51:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-08-13 17:51:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-08-13 17:51:43,404 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 17:51:43,516 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 17:51:43,516 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 17:51:43,518 INFO L202 PluginConnector]: Adding new model pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:51:43 BoogieIcfgContainer [2021-08-13 17:51:43,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 17:51:43,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 17:51:43,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 17:51:43,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 17:51:43,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:51:43" (1/2) ... [2021-08-13 17:51:43,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b10cfc0 and model type pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:51:43, skipping insertion in model container [2021-08-13 17:51:43,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:51:43" (2/2) ... [2021-08-13 17:51:43,525 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread_nondet_loop_bound.bpl [2021-08-13 17:51:43,529 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 17:51:43,529 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 17:51:43,530 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 17:51:43,554 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:43,554 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:43,555 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:43,555 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:43,561 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:43,564 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 17:51:43,591 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 17:51:43,617 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:51:43,617 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:51:43,617 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:51:43,617 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:51:43,617 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:51:43,617 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:51:43,617 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:51:43,618 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:51:43,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 13 transitions, 31 flow [2021-08-13 17:51:43,645 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-08-13 17:51:43,646 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 17:51:43,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 17:51:43,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 13 transitions, 31 flow [2021-08-13 17:51:43,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 13 transitions, 31 flow [2021-08-13 17:51:43,658 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-08-13 17:51:43,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 17:51:43,658 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:43,659 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:43,659 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:43,664 INFO L82 PathProgramCache]: Analyzing trace with hash 268785362, now seen corresponding path program 1 times [2021-08-13 17:51:43,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:43,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613552451] [2021-08-13 17:51:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:43,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:43,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:43,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:43,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:43,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:43,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:43,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:43,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:43,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:43,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:43,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:43,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613552451] [2021-08-13 17:51:43,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613552451] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:51:43,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:51:43,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:51:43,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184482893] [2021-08-13 17:51:43,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:51:43,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:43,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:51:43,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:51:43,859 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 13 [2021-08-13 17:51:43,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 31 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-08-13 17:51:43,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:43,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 13 [2021-08-13 17:51:43,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:44,009 INFO L129 PetriNetUnfolder]: 8/39 cut-off events. [2021-08-13 17:51:44,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 17:51:44,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 39 events. 8/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 104 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 57. Up to 12 conditions per place. [2021-08-13 17:51:44,011 INFO L132 encePairwiseOnDemand]: 6/13 looper letters, 8 selfloop transitions, 5 changer transitions 6/21 dead transitions. [2021-08-13 17:51:44,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 21 transitions, 83 flow [2021-08-13 17:51:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 17:51:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 17:51:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 44 transitions. [2021-08-13 17:51:44,019 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2021-08-13 17:51:44,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 44 transitions. [2021-08-13 17:51:44,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 44 transitions. [2021-08-13 17:51:44,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:44,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 44 transitions. [2021-08-13 17:51:44,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2021-08-13 17:51:44,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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) [2021-08-13 17:51:44,029 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 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) [2021-08-13 17:51:44,030 INFO L348 CegarLoopForPetriNet]: 16 programPoint places, 6 predicate places. [2021-08-13 17:51:44,030 INFO L482 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 83 flow [2021-08-13 17:51:44,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2021-08-13 17:51:44,030 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:44,030 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2021-08-13 17:51:44,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 17:51:44,031 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:44,031 INFO L82 PathProgramCache]: Analyzing trace with hash 268777336, now seen corresponding path program 1 times [2021-08-13 17:51:44,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:44,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220225855] [2021-08-13 17:51:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 17:51:44,046 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 17:51:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 17:51:44,049 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 17:51:44,059 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 17:51:44,059 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 17:51:44,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 17:51:44,060 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 17:51:44,060 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-08-13 17:51:44,064 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,064 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,065 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,065 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,067 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,067 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,067 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,067 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,068 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,070 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,071 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 17:51:44,071 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 17:51:44,074 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:51:44,074 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:51:44,074 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:51:44,074 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:51:44,074 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:51:44,074 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:51:44,075 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:51:44,075 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:51:44,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-08-13 17:51:44,085 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-08-13 17:51:44,086 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 17:51:44,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 26 events. 0/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-08-13 17:51:44,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 50 flow [2021-08-13 17:51:44,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2021-08-13 17:51:44,094 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-08-13 17:51:44,094 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 17:51:44,094 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:44,095 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:44,095 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:44,099 INFO L82 PathProgramCache]: Analyzing trace with hash 513720736, now seen corresponding path program 1 times [2021-08-13 17:51:44,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:44,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043111907] [2021-08-13 17:51:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:44,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:44,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:44,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:44,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:44,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:44,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:44,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043111907] [2021-08-13 17:51:44,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043111907] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:51:44,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:51:44,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:51:44,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469011908] [2021-08-13 17:51:44,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:51:44,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:51:44,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:51:44,156 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2021-08-13 17:51:44,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-08-13 17:51:44,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:44,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2021-08-13 17:51:44,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:44,471 INFO L129 PetriNetUnfolder]: 192/486 cut-off events. [2021-08-13 17:51:44,471 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-08-13 17:51:44,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 486 events. 192/486 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2855 event pairs, 23 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 806. Up to 119 conditions per place. [2021-08-13 17:51:44,476 INFO L132 encePairwiseOnDemand]: 8/19 looper letters, 38 selfloop transitions, 18 changer transitions 5/65 dead transitions. [2021-08-13 17:51:44,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 65 transitions, 274 flow [2021-08-13 17:51:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 17:51:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 17:51:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2021-08-13 17:51:44,478 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5406698564593302 [2021-08-13 17:51:44,478 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 113 transitions. [2021-08-13 17:51:44,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 113 transitions. [2021-08-13 17:51:44,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:44,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 113 transitions. [2021-08-13 17:51:44,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2021-08-13 17:51:44,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 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) [2021-08-13 17:51:44,480 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 19.0) internal successors, (228), 12 states have internal predecessors, (228), 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) [2021-08-13 17:51:44,480 INFO L348 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2021-08-13 17:51:44,480 INFO L482 AbstractCegarLoop]: Abstraction has has 34 places, 65 transitions, 274 flow [2021-08-13 17:51:44,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-08-13 17:51:44,480 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:44,480 INFO L266 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-08-13 17:51:44,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 17:51:44,480 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:44,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1047115182, now seen corresponding path program 1 times [2021-08-13 17:51:44,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:44,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26693512] [2021-08-13 17:51:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 17:51:44,487 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 17:51:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 17:51:44,491 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 17:51:44,492 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 17:51:44,493 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 17:51:44,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 17:51:44,493 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 17:51:44,493 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-08-13 17:51:44,499 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,500 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,500 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,500 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,500 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,500 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,500 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,501 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,501 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,501 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,501 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,501 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,502 WARN L313 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,503 WARN L313 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,504 WARN L313 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:51:44,506 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 17:51:44,506 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 17:51:44,508 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:51:44,508 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:51:44,508 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:51:44,508 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:51:44,509 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:51:44,509 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:51:44,509 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:51:44,509 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:51:44,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2021-08-13 17:51:44,534 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-08-13 17:51:44,534 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-08-13 17:51:44,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 36 events. 0/36 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-08-13 17:51:44,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow [2021-08-13 17:51:44,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 71 flow [2021-08-13 17:51:44,543 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-08-13 17:51:44,544 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 17:51:44,544 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:44,544 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:44,544 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1966221566, now seen corresponding path program 1 times [2021-08-13 17:51:44,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:44,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279720702] [2021-08-13 17:51:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:44,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:44,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:44,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:44,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:44,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:44,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:44,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:44,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279720702] [2021-08-13 17:51:44,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279720702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:51:44,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:51:44,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:51:44,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321959242] [2021-08-13 17:51:44,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:51:44,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:44,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:51:44,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:51:44,597 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2021-08-13 17:51:44,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 71 flow. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-08-13 17:51:44,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:44,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2021-08-13 17:51:44,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:45,054 INFO L129 PetriNetUnfolder]: 2284/4383 cut-off events. [2021-08-13 17:51:45,054 INFO L130 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2021-08-13 17:51:45,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8302 conditions, 4383 events. 2284/4383 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 32579 event pairs, 349 based on Foata normal form. 0/3514 useless extension candidates. Maximal degree in co-relation 5975. Up to 1027 conditions per place. [2021-08-13 17:51:45,079 INFO L132 encePairwiseOnDemand]: 11/25 looper letters, 69 selfloop transitions, 29 changer transitions 1/104 dead transitions. [2021-08-13 17:51:45,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 104 transitions, 472 flow [2021-08-13 17:51:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 17:51:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 17:51:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2021-08-13 17:51:45,081 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6036363636363636 [2021-08-13 17:51:45,081 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 166 transitions. [2021-08-13 17:51:45,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 166 transitions. [2021-08-13 17:51:45,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:45,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 166 transitions. [2021-08-13 17:51:45,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 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) [2021-08-13 17:51:45,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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) [2021-08-13 17:51:45,083 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 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) [2021-08-13 17:51:45,084 INFO L348 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2021-08-13 17:51:45,084 INFO L482 AbstractCegarLoop]: Abstraction has has 42 places, 104 transitions, 472 flow [2021-08-13 17:51:45,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-08-13 17:51:45,084 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:45,084 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:45,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 17:51:45,084 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:45,084 INFO L82 PathProgramCache]: Analyzing trace with hash 408196648, now seen corresponding path program 1 times [2021-08-13 17:51:45,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:45,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316308965] [2021-08-13 17:51:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:45,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:45,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:45,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:45,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:45,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 17:51:45,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:45,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316308965] [2021-08-13 17:51:45,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316308965] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:45,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947431503] [2021-08-13 17:51:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-13 17:51:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:45,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-13 17:51:45,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:45,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:45,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:45,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:45,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:45,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:45,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:45,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:45,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:45,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:45,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:45,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:45,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:45,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:45,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:45,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:45,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:45,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:45,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:45,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:45,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:45,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:45,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:45,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947431503] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:45,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:51:45,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-08-13 17:51:45,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563533] [2021-08-13 17:51:45,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:51:45,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:45,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:51:45,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:51:45,390 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2021-08-13 17:51:45,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 104 transitions, 472 flow. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 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) [2021-08-13 17:51:45,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:45,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2021-08-13 17:51:45,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:46,247 INFO L129 PetriNetUnfolder]: 4011/8471 cut-off events. [2021-08-13 17:51:46,248 INFO L130 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2021-08-13 17:51:46,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22627 conditions, 8471 events. 4011/8471 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 79168 event pairs, 428 based on Foata normal form. 0/7029 useless extension candidates. Maximal degree in co-relation 17289. Up to 1978 conditions per place. [2021-08-13 17:51:46,295 INFO L132 encePairwiseOnDemand]: 10/25 looper letters, 212 selfloop transitions, 103 changer transitions 3/323 dead transitions. [2021-08-13 17:51:46,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 323 transitions, 2066 flow [2021-08-13 17:51:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-13 17:51:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-08-13 17:51:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 209 transitions. [2021-08-13 17:51:46,299 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5573333333333333 [2021-08-13 17:51:46,299 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 209 transitions. [2021-08-13 17:51:46,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 209 transitions. [2021-08-13 17:51:46,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:46,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 209 transitions. [2021-08-13 17:51:46,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 13.933333333333334) internal successors, (209), 15 states have internal predecessors, (209), 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) [2021-08-13 17:51:46,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 25.0) internal successors, (400), 16 states have internal predecessors, (400), 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) [2021-08-13 17:51:46,303 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 25.0) internal successors, (400), 16 states have internal predecessors, (400), 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) [2021-08-13 17:51:46,304 INFO L348 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2021-08-13 17:51:46,304 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 323 transitions, 2066 flow [2021-08-13 17:51:46,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 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) [2021-08-13 17:51:46,304 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:46,304 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:46,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-13 17:51:46,521 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:46,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1439721932, now seen corresponding path program 1 times [2021-08-13 17:51:46,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:46,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066726657] [2021-08-13 17:51:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:46,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:46,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:46,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:46,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:46,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:46,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:46,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:46,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:46,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:46,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066726657] [2021-08-13 17:51:46,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066726657] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:46,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726446352] [2021-08-13 17:51:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:46,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-13 17:51:46,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:51:46,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:46,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:46,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:46,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:46,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:46,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:46,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:46,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:46,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:46,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:46,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:46,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:46,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:46,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:46,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:46,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:46,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:46,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:46,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:46,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:46,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:46,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:46,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:46,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:46,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:46,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:46,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:46,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:46,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:46,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726446352] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:46,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:51:46,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-08-13 17:51:46,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924435039] [2021-08-13 17:51:46,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-13 17:51:46,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:46,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-13 17:51:46,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-08-13 17:51:46,799 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2021-08-13 17:51:46,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 323 transitions, 2066 flow. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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) [2021-08-13 17:51:46,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:46,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2021-08-13 17:51:46,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:48,512 INFO L129 PetriNetUnfolder]: 7085/15369 cut-off events. [2021-08-13 17:51:48,512 INFO L130 PetriNetUnfolder]: For 885/885 co-relation queries the response was YES. [2021-08-13 17:51:48,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53101 conditions, 15369 events. 7085/15369 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 161211 event pairs, 587 based on Foata normal form. 0/12981 useless extension candidates. Maximal degree in co-relation 33242. Up to 5063 conditions per place. [2021-08-13 17:51:48,610 INFO L132 encePairwiseOnDemand]: 9/25 looper letters, 507 selfloop transitions, 287 changer transitions 8/807 dead transitions. [2021-08-13 17:51:48,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 807 transitions, 6743 flow [2021-08-13 17:51:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-13 17:51:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-08-13 17:51:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 453 transitions. [2021-08-13 17:51:48,613 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5490909090909091 [2021-08-13 17:51:48,613 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 453 transitions. [2021-08-13 17:51:48,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 453 transitions. [2021-08-13 17:51:48,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:48,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 453 transitions. [2021-08-13 17:51:48,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 13.727272727272727) internal successors, (453), 33 states have internal predecessors, (453), 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) [2021-08-13 17:51:48,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 25.0) internal successors, (850), 34 states have internal predecessors, (850), 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) [2021-08-13 17:51:48,617 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 25.0) internal successors, (850), 34 states have internal predecessors, (850), 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) [2021-08-13 17:51:48,617 INFO L348 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2021-08-13 17:51:48,617 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 807 transitions, 6743 flow [2021-08-13 17:51:48,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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) [2021-08-13 17:51:48,617 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:48,617 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:48,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:48,832 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:48,832 INFO L82 PathProgramCache]: Analyzing trace with hash 35510376, now seen corresponding path program 2 times [2021-08-13 17:51:48,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:48,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586936282] [2021-08-13 17:51:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:48,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:48,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:48,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:48,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:48,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:48,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:48,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:48,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:48,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 17:51:48,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:48,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586936282] [2021-08-13 17:51:48,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586936282] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:48,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314297016] [2021-08-13 17:51:48,966 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:49,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-13 17:51:49,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-13 17:51:49,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-13 17:51:49,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:51:49,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:49,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:49,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:49,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:49,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:49,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:49,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:49,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:49,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:49,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:49,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:49,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:49,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:49,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:49,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:49,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:49,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:49,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:49,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:49,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:49,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:49,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:49,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:49,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:49,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:49,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:49,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:49,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:49,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:49,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314297016] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:49,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:51:49,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-08-13 17:51:49,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100828886] [2021-08-13 17:51:49,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-08-13 17:51:49,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:49,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-13 17:51:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-08-13 17:51:49,129 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2021-08-13 17:51:49,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 807 transitions, 6743 flow. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 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) [2021-08-13 17:51:49,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:49,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2021-08-13 17:51:49,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:51,676 INFO L129 PetriNetUnfolder]: 8585/19119 cut-off events. [2021-08-13 17:51:51,676 INFO L130 PetriNetUnfolder]: For 1389/1389 co-relation queries the response was YES. [2021-08-13 17:51:51,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81156 conditions, 19119 events. 8585/19119 cut-off events. For 1389/1389 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 212481 event pairs, 668 based on Foata normal form. 0/16275 useless extension candidates. Maximal degree in co-relation 44659. Up to 6620 conditions per place. [2021-08-13 17:51:51,794 INFO L132 encePairwiseOnDemand]: 9/25 looper letters, 807 selfloop transitions, 436 changer transitions 18/1266 dead transitions. [2021-08-13 17:51:51,794 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 1266 transitions, 13045 flow [2021-08-13 17:51:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-13 17:51:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-08-13 17:51:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 530 transitions. [2021-08-13 17:51:51,797 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2021-08-13 17:51:51,797 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 530 transitions. [2021-08-13 17:51:51,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 530 transitions. [2021-08-13 17:51:51,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:51,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 530 transitions. [2021-08-13 17:51:51,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 12.619047619047619) internal successors, (530), 42 states have internal predecessors, (530), 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) [2021-08-13 17:51:51,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 25.0) internal successors, (1075), 43 states have internal predecessors, (1075), 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) [2021-08-13 17:51:51,802 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 25.0) internal successors, (1075), 43 states have internal predecessors, (1075), 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) [2021-08-13 17:51:51,802 INFO L348 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2021-08-13 17:51:51,803 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 1266 transitions, 13045 flow [2021-08-13 17:51:51,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 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) [2021-08-13 17:51:51,803 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:51,803 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:52,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:52,009 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:52,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1434960327, now seen corresponding path program 1 times [2021-08-13 17:51:52,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:52,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265761564] [2021-08-13 17:51:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:52,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:52,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:52,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:52,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:52,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:52,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:52,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:52,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:52,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:52,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265761564] [2021-08-13 17:51:52,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265761564] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:52,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698592262] [2021-08-13 17:51:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:52,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-13 17:51:52,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:51:52,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:52,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:52,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:52,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:52,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:52,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:52,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:52,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:52,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:52,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:52,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:52,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:52,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:52,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:52,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:52,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:52,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:52,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:52,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:52,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:52,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:52,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:52,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:52,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:52,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:52,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:52,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:52,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:52,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:52,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698592262] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:52,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:51:52,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-08-13 17:51:52,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453766473] [2021-08-13 17:51:52,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-13 17:51:52,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:52,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-13 17:51:52,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-08-13 17:51:52,295 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2021-08-13 17:51:52,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 1266 transitions, 13045 flow. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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) [2021-08-13 17:51:52,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:52,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2021-08-13 17:51:52,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:51:55,515 INFO L129 PetriNetUnfolder]: 9023/20236 cut-off events. [2021-08-13 17:51:55,516 INFO L130 PetriNetUnfolder]: For 1464/1464 co-relation queries the response was YES. [2021-08-13 17:51:55,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101774 conditions, 20236 events. 9023/20236 cut-off events. For 1464/1464 co-relation queries the response was YES. Maximal size of possible extension queue 2182. Compared 227432 event pairs, 679 based on Foata normal form. 0/17298 useless extension candidates. Maximal degree in co-relation 57830. Up to 6646 conditions per place. [2021-08-13 17:51:55,639 INFO L132 encePairwiseOnDemand]: 9/25 looper letters, 959 selfloop transitions, 547 changer transitions 31/1542 dead transitions. [2021-08-13 17:51:55,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1542 transitions, 18949 flow [2021-08-13 17:51:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-13 17:51:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-08-13 17:51:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 633 transitions. [2021-08-13 17:51:55,642 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5387234042553192 [2021-08-13 17:51:55,642 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 633 transitions. [2021-08-13 17:51:55,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 633 transitions. [2021-08-13 17:51:55,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:51:55,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 633 transitions. [2021-08-13 17:51:55,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 13.46808510638298) internal successors, (633), 47 states have internal predecessors, (633), 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) [2021-08-13 17:51:55,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 25.0) internal successors, (1200), 48 states have internal predecessors, (1200), 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) [2021-08-13 17:51:55,645 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 25.0) internal successors, (1200), 48 states have internal predecessors, (1200), 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) [2021-08-13 17:51:55,645 INFO L348 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2021-08-13 17:51:55,645 INFO L482 AbstractCegarLoop]: Abstraction has has 175 places, 1542 transitions, 18949 flow [2021-08-13 17:51:55,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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) [2021-08-13 17:51:55,645 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:51:55,645 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:51:55,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:55,863 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:51:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:51:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash -825742738, now seen corresponding path program 3 times [2021-08-13 17:51:55,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:51:55,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001039205] [2021-08-13 17:51:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:51:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:51:55,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:55,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:55,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:51:55,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 17:51:55,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:51:55,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001039205] [2021-08-13 17:51:55,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001039205] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:55,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035442190] [2021-08-13 17:51:55,918 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:51:55,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-13 17:51:55,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-13 17:51:55,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-13 17:51:55,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:51:55,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:51:55,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:55,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:55,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:55,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:55,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:55,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:55,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:55,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:55,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:55,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:55,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:55,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:55,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:55,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:55,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:55,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:56,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:56,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:56,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:51:56,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:56,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:56,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:51:56,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:51:56,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:51:56,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:51:56,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:51:56,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:51:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:51:56,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035442190] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:51:56,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:51:56,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-08-13 17:51:56,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472519876] [2021-08-13 17:51:56,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-08-13 17:51:56,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:51:56,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-13 17:51:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-08-13 17:51:56,070 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2021-08-13 17:51:56,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 1542 transitions, 18949 flow. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 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) [2021-08-13 17:51:56,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:51:56,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2021-08-13 17:51:56,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:00,207 INFO L129 PetriNetUnfolder]: 10549/24234 cut-off events. [2021-08-13 17:52:00,207 INFO L130 PetriNetUnfolder]: For 1702/1702 co-relation queries the response was YES. [2021-08-13 17:52:00,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139808 conditions, 24234 events. 10549/24234 cut-off events. For 1702/1702 co-relation queries the response was YES. Maximal size of possible extension queue 2732. Compared 286205 event pairs, 712 based on Foata normal form. 0/20822 useless extension candidates. Maximal degree in co-relation 74104. Up to 7715 conditions per place. [2021-08-13 17:52:00,360 INFO L132 encePairwiseOnDemand]: 9/25 looper letters, 1240 selfloop transitions, 732 changer transitions 41/2018 dead transitions. [2021-08-13 17:52:00,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 2018 transitions, 28771 flow [2021-08-13 17:52:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-13 17:52:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-08-13 17:52:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 689 transitions. [2021-08-13 17:52:00,363 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5103703703703704 [2021-08-13 17:52:00,363 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 689 transitions. [2021-08-13 17:52:00,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 689 transitions. [2021-08-13 17:52:00,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:00,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 689 transitions. [2021-08-13 17:52:00,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 12.75925925925926) internal successors, (689), 54 states have internal predecessors, (689), 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) [2021-08-13 17:52:00,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 25.0) internal successors, (1375), 55 states have internal predecessors, (1375), 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) [2021-08-13 17:52:00,366 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 25.0) internal successors, (1375), 55 states have internal predecessors, (1375), 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) [2021-08-13 17:52:00,367 INFO L348 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2021-08-13 17:52:00,367 INFO L482 AbstractCegarLoop]: Abstraction has has 228 places, 2018 transitions, 28771 flow [2021-08-13 17:52:00,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 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) [2021-08-13 17:52:00,367 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:00,367 INFO L266 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:00,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-13 17:52:00,581 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:00,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1147361507, now seen corresponding path program 1 times [2021-08-13 17:52:00,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:00,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007085923] [2021-08-13 17:52:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 17:52:00,585 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 17:52:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 17:52:00,587 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 17:52:00,588 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 17:52:00,588 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 17:52:00,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 17:52:00,589 WARN L235 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-08-13 17:52:00,589 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-08-13 17:52:00,596 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,596 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,596 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,596 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,597 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,600 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,600 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,600 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,601 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,602 WARN L313 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,603 WARN L313 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,603 WARN L313 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,605 WARN L313 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 17:52:00,606 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 17:52:00,606 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 17:52:00,606 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:52:00,606 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:52:00,607 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:52:00,607 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:52:00,607 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:52:00,607 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:52:00,607 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:52:00,607 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:52:00,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 31 transitions, 94 flow [2021-08-13 17:52:00,612 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-08-13 17:52:00,613 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-08-13 17:52:00,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 46 events. 0/46 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-08-13 17:52:00,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 31 transitions, 94 flow [2021-08-13 17:52:00,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 31 transitions, 94 flow [2021-08-13 17:52:00,615 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-08-13 17:52:00,615 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 17:52:00,615 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:00,615 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:00,615 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:00,615 INFO L82 PathProgramCache]: Analyzing trace with hash 331295731, now seen corresponding path program 1 times [2021-08-13 17:52:00,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:00,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583307198] [2021-08-13 17:52:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:00,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:00,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:00,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:00,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:00,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:00,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:00,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:00,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583307198] [2021-08-13 17:52:00,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583307198] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:52:00,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:52:00,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:52:00,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927726867] [2021-08-13 17:52:00,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:52:00,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:00,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:52:00,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:52:00,646 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2021-08-13 17:52:00,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-08-13 17:52:00,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:00,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2021-08-13 17:52:00,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:02,743 INFO L129 PetriNetUnfolder]: 19675/32502 cut-off events. [2021-08-13 17:52:02,743 INFO L130 PetriNetUnfolder]: For 3059/3059 co-relation queries the response was YES. [2021-08-13 17:52:02,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62531 conditions, 32502 events. 19675/32502 cut-off events. For 3059/3059 co-relation queries the response was YES. Maximal size of possible extension queue 1920. Compared 268176 event pairs, 3485 based on Foata normal form. 0/26476 useless extension candidates. Maximal degree in co-relation 34543. Up to 8501 conditions per place. [2021-08-13 17:52:02,909 INFO L132 encePairwiseOnDemand]: 14/31 looper letters, 91 selfloop transitions, 37 changer transitions 1/135 dead transitions. [2021-08-13 17:52:02,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 135 transitions, 650 flow [2021-08-13 17:52:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 17:52:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 17:52:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2021-08-13 17:52:02,917 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6187683284457478 [2021-08-13 17:52:02,917 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 211 transitions. [2021-08-13 17:52:02,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 211 transitions. [2021-08-13 17:52:02,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:02,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 211 transitions. [2021-08-13 17:52:02,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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) [2021-08-13 17:52:02,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 31.0) internal successors, (372), 12 states have internal predecessors, (372), 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) [2021-08-13 17:52:02,919 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 31.0) internal successors, (372), 12 states have internal predecessors, (372), 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) [2021-08-13 17:52:02,919 INFO L348 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2021-08-13 17:52:02,919 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 135 transitions, 650 flow [2021-08-13 17:52:02,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-08-13 17:52:02,919 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:02,919 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:02,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 17:52:02,919 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:02,919 INFO L82 PathProgramCache]: Analyzing trace with hash -590120179, now seen corresponding path program 1 times [2021-08-13 17:52:02,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:02,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100680112] [2021-08-13 17:52:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:02,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:02,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:02,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:02,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:02,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 17:52:02,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:02,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100680112] [2021-08-13 17:52:02,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100680112] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:52:02,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825556771] [2021-08-13 17:52:02,946 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 [2021-08-13 17:52:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:02,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-13 17:52:02,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:52:02,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:02,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:02,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:02,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:02,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:02,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:02,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:02,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:02,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:02,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:02,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:02,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:02,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:02,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:02,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:02,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:03,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:03,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:03,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:03,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:03,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:03,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:03,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:03,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825556771] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:52:03,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:52:03,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-08-13 17:52:03,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214244834] [2021-08-13 17:52:03,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-13 17:52:03,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:03,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-13 17:52:03,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-08-13 17:52:03,036 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2021-08-13 17:52:03,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 135 transitions, 650 flow. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 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) [2021-08-13 17:52:03,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:03,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2021-08-13 17:52:03,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:09,589 INFO L129 PetriNetUnfolder]: 41260/72223 cut-off events. [2021-08-13 17:52:09,589 INFO L130 PetriNetUnfolder]: For 7899/7899 co-relation queries the response was YES. [2021-08-13 17:52:09,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199338 conditions, 72223 events. 41260/72223 cut-off events. For 7899/7899 co-relation queries the response was YES. Maximal size of possible extension queue 4758. Compared 722695 event pairs, 5086 based on Foata normal form. 0/60869 useless extension candidates. Maximal degree in co-relation 72257. Up to 15563 conditions per place. [2021-08-13 17:52:09,986 INFO L132 encePairwiseOnDemand]: 13/31 looper letters, 306 selfloop transitions, 139 changer transitions 3/454 dead transitions. [2021-08-13 17:52:09,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 454 transitions, 3048 flow [2021-08-13 17:52:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-13 17:52:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-08-13 17:52:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 264 transitions. [2021-08-13 17:52:09,987 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.567741935483871 [2021-08-13 17:52:09,987 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 264 transitions. [2021-08-13 17:52:09,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 264 transitions. [2021-08-13 17:52:09,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:09,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 264 transitions. [2021-08-13 17:52:09,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 17.6) internal successors, (264), 15 states have internal predecessors, (264), 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) [2021-08-13 17:52:09,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 31.0) internal successors, (496), 16 states have internal predecessors, (496), 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) [2021-08-13 17:52:09,988 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 31.0) internal successors, (496), 16 states have internal predecessors, (496), 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) [2021-08-13 17:52:09,988 INFO L348 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2021-08-13 17:52:09,988 INFO L482 AbstractCegarLoop]: Abstraction has has 64 places, 454 transitions, 3048 flow [2021-08-13 17:52:09,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 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) [2021-08-13 17:52:09,989 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:09,989 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:10,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-13 17:52:10,205 INFO L430 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1450030409, now seen corresponding path program 1 times [2021-08-13 17:52:10,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:10,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596096685] [2021-08-13 17:52:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:10,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:10,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:10,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:10,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 17:52:10,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:10,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596096685] [2021-08-13 17:52:10,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596096685] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:52:10,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971402747] [2021-08-13 17:52:10,247 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 [2021-08-13 17:52:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-13 17:52:10,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:52:10,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:10,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:10,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:10,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:10,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:10,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:10,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:10,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:10,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:10,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:10,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:10,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:10,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:10,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:10,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:10,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:10,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:10,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:10,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:10,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:10,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:10,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:10,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:10,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:10,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:10,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:10,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971402747] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:52:10,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:52:10,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-08-13 17:52:10,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501285702] [2021-08-13 17:52:10,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-08-13 17:52:10,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:10,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-13 17:52:10,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-08-13 17:52:10,367 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2021-08-13 17:52:10,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 454 transitions, 3048 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2021-08-13 17:52:10,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:10,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2021-08-13 17:52:10,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:52:25,913 INFO L129 PetriNetUnfolder]: 67880/122996 cut-off events. [2021-08-13 17:52:25,913 INFO L130 PetriNetUnfolder]: For 17057/17057 co-relation queries the response was YES. [2021-08-13 17:52:26,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 441089 conditions, 122996 events. 67880/122996 cut-off events. For 17057/17057 co-relation queries the response was YES. Maximal size of possible extension queue 8866. Compared 1377087 event pairs, 5563 based on Foata normal form. 0/104582 useless extension candidates. Maximal degree in co-relation 260424. Up to 28089 conditions per place. [2021-08-13 17:52:26,717 INFO L132 encePairwiseOnDemand]: 12/31 looper letters, 828 selfloop transitions, 442 changer transitions 3/1279 dead transitions. [2021-08-13 17:52:26,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 1279 transitions, 10944 flow [2021-08-13 17:52:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-13 17:52:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-08-13 17:52:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 998 transitions. [2021-08-13 17:52:26,720 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5961768219832736 [2021-08-13 17:52:26,720 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 998 transitions. [2021-08-13 17:52:26,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 998 transitions. [2021-08-13 17:52:26,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:52:26,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 998 transitions. [2021-08-13 17:52:26,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 18.48148148148148) internal successors, (998), 54 states have internal predecessors, (998), 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) [2021-08-13 17:52:26,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 31.0) internal successors, (1705), 55 states have internal predecessors, (1705), 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) [2021-08-13 17:52:26,724 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 31.0) internal successors, (1705), 55 states have internal predecessors, (1705), 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) [2021-08-13 17:52:26,724 INFO L348 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2021-08-13 17:52:26,724 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 1279 transitions, 10944 flow [2021-08-13 17:52:26,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2021-08-13 17:52:26,724 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:52:26,724 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:52:26,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-13 17:52:26,925 INFO L430 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:52:26,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:52:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash -169812185, now seen corresponding path program 2 times [2021-08-13 17:52:26,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:52:26,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576041725] [2021-08-13 17:52:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:52:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:52:26,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:26,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:26,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:26,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:26,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:26,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:26,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:52:26,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:26,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:26,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:52:26,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576041725] [2021-08-13 17:52:26,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576041725] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:52:26,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740797986] [2021-08-13 17:52:26,993 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 [2021-08-13 17:52:27,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-13 17:52:27,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-13 17:52:27,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-13 17:52:27,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:52:27,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:27,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:27,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:27,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:52:27,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:27,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:27,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:27,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:27,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:27,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:27,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:27,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:27,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:27,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:27,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:27,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:27,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:27,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:27,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:27,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:27,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:52:27,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:27,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:27,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:52:27,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:52:27,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:52:27,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:52:27,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:52:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:52:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:52:27,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740797986] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:52:27,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:52:27,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-08-13 17:52:27,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349533794] [2021-08-13 17:52:27,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-13 17:52:27,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:52:27,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-13 17:52:27,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-08-13 17:52:27,129 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2021-08-13 17:52:27,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 1279 transitions, 10944 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2021-08-13 17:52:27,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:52:27,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2021-08-13 17:52:27,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:53:02,800 INFO L129 PetriNetUnfolder]: 106243/195790 cut-off events. [2021-08-13 17:53:02,800 INFO L130 PetriNetUnfolder]: For 25225/25225 co-relation queries the response was YES. [2021-08-13 17:53:03,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 858021 conditions, 195790 events. 106243/195790 cut-off events. For 25225/25225 co-relation queries the response was YES. Maximal size of possible extension queue 14683. Compared 2357387 event pairs, 8564 based on Foata normal form. 0/169165 useless extension candidates. Maximal degree in co-relation 377409. Up to 56766 conditions per place. [2021-08-13 17:53:04,247 INFO L132 encePairwiseOnDemand]: 12/31 looper letters, 1638 selfloop transitions, 770 changer transitions 3/2417 dead transitions. [2021-08-13 17:53:04,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 2417 transitions, 25504 flow [2021-08-13 17:53:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-13 17:53:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-08-13 17:53:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 855 transitions. [2021-08-13 17:53:04,249 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5868222374742622 [2021-08-13 17:53:04,249 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 855 transitions. [2021-08-13 17:53:04,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 855 transitions. [2021-08-13 17:53:04,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:53:04,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 855 transitions. [2021-08-13 17:53:04,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 18.19148936170213) internal successors, (855), 47 states have internal predecessors, (855), 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) [2021-08-13 17:53:04,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 31.0) internal successors, (1488), 48 states have internal predecessors, (1488), 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) [2021-08-13 17:53:04,252 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 31.0) internal successors, (1488), 48 states have internal predecessors, (1488), 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) [2021-08-13 17:53:04,252 INFO L348 CegarLoopForPetriNet]: 40 programPoint places, 123 predicate places. [2021-08-13 17:53:04,252 INFO L482 AbstractCegarLoop]: Abstraction has has 163 places, 2417 transitions, 25504 flow [2021-08-13 17:53:04,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2021-08-13 17:53:04,253 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:53:04,253 INFO L266 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:53:04,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-13 17:53:04,462 INFO L430 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:53:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:53:04,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1503398707, now seen corresponding path program 1 times [2021-08-13 17:53:04,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:53:04,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623909602] [2021-08-13 17:53:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:53:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:04,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:53:04,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:53:04,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:53:04,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:53:04,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:53:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-13 17:53:04,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:53:04,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623909602] [2021-08-13 17:53:04,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623909602] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:53:04,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242389366] [2021-08-13 17:53:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-08-13 17:53:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:53:04,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-13 17:53:04,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:53:04,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:53:04,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:53:04,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:53:04,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:53:04,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:53:04,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:04,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:53:04,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:53:04,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:04,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:53:04,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:53:04,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:04,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:53:04,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:53:04,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:04,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:53:04,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:53:04,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:53:04,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:53:04,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:53:04,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:53:04,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:53:04,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:53:04,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:53:04,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:53:04,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:53:04,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:53:04,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:53:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:53:04,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242389366] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:53:04,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:53:04,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-08-13 17:53:04,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829945559] [2021-08-13 17:53:04,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-08-13 17:53:04,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:53:04,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-13 17:53:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-13 17:53:04,611 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2021-08-13 17:53:04,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 2417 transitions, 25504 flow. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2021-08-13 17:53:04,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:53:04,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2021-08-13 17:53:04,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:54:51,569 INFO L129 PetriNetUnfolder]: 180620/341016 cut-off events. [2021-08-13 17:54:51,569 INFO L130 PetriNetUnfolder]: For 39516/39516 co-relation queries the response was YES. [2021-08-13 17:54:52,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1758781 conditions, 341016 events. 180620/341016 cut-off events. For 39516/39516 co-relation queries the response was YES. Maximal size of possible extension queue 27893. Compared 4503300 event pairs, 12747 based on Foata normal form. 0/296463 useless extension candidates. Maximal degree in co-relation 410175. Up to 100416 conditions per place. [2021-08-13 17:54:54,522 INFO L132 encePairwiseOnDemand]: 13/31 looper letters, 3212 selfloop transitions, 1691 changer transitions 9/4918 dead transitions. [2021-08-13 17:54:54,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 4918 transitions, 61337 flow [2021-08-13 17:54:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 17:54:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 17:54:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 274 transitions. [2021-08-13 17:54:54,523 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.5524193548387096 [2021-08-13 17:54:54,523 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 274 transitions. [2021-08-13 17:54:54,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 274 transitions. [2021-08-13 17:54:54,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:54:54,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 274 transitions. [2021-08-13 17:54:54,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 17.125) internal successors, (274), 16 states have internal predecessors, (274), 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) [2021-08-13 17:54:54,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 31.0) internal successors, (527), 17 states have internal predecessors, (527), 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) [2021-08-13 17:54:54,524 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 31.0) internal successors, (527), 17 states have internal predecessors, (527), 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) [2021-08-13 17:54:54,524 INFO L348 CegarLoopForPetriNet]: 40 programPoint places, 138 predicate places. [2021-08-13 17:54:54,525 INFO L482 AbstractCegarLoop]: Abstraction has has 178 places, 4918 transitions, 61337 flow [2021-08-13 17:54:54,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2021-08-13 17:54:54,525 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:54:54,525 INFO L266 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:54:54,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-13 17:54:54,725 INFO L430 AbstractCegarLoop]: === Iteration 6 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:54:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:54:54,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1437103149, now seen corresponding path program 1 times [2021-08-13 17:54:54,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:54:54,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287701196] [2021-08-13 17:54:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:54:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:54,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:54,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:54,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:54:54,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:54:54,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:54,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:54:54,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:54:54,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:54:54,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 17:54:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-13 17:54:54,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:54:54,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287701196] [2021-08-13 17:54:54,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287701196] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:54:54,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271199803] [2021-08-13 17:54:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-08-13 17:54:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:54:54,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-13 17:54:54,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 17:54:54,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:54,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:54,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:54,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:54:54,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:54,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:54:54,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:54,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:54:54,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:54:54,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:54:54,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:54:54,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:54,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:54:54,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:54,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:54:54,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:54,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:54:54,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:54:54,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:54:54,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 17:54:54,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:54:54,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 17:54:54,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 17:54:54,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 17:54:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-08-13 17:54:54,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:54:54,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:54:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:54:54,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271199803] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 17:54:54,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 17:54:54,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2021-08-13 17:54:54,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728665684] [2021-08-13 17:54:54,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-08-13 17:54:54,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:54:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-13 17:54:54,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-08-13 17:54:54,914 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2021-08-13 17:54:54,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 4918 transitions, 61337 flow. Second operand has 17 states, 17 states have (on average 7.647058823529412) internal successors, (130), 17 states have internal predecessors, (130), 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) [2021-08-13 17:54:54,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:54:54,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2021-08-13 17:54:54,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 17:59:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-13 17:59:10,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-13 17:59:10,251 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 17:59:10,253 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2021-08-13 17:59:10,255 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 17:59:10,255 INFO L202 PluginConnector]: Adding new model pthread_nondet_loop_bound.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 05:59:10 BasicIcfg [2021-08-13 17:59:10,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 17:59:10,255 INFO L168 Benchmark]: Toolchain (without parser) took 446928.74 ms. Allocated memory was 219.2 MB in the beginning and 5.7 GB in the end (delta: 5.5 GB). Free memory was 199.3 MB in the beginning and 27.1 MB in the end (delta: 172.3 MB). Peak memory consumption was 6.2 GB. Max. memory is 8.0 GB. [2021-08-13 17:59:10,255 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 219.2 MB. Free memory was 200.4 MB in the beginning and 200.3 MB in the end (delta: 85.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 17:59:10,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.44 ms. Allocated memory is still 219.2 MB. Free memory was 199.3 MB in the beginning and 197.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 17:59:10,255 INFO L168 Benchmark]: Boogie Preprocessor took 9.74 ms. Allocated memory is still 219.2 MB. Free memory was 197.8 MB in the beginning and 196.9 MB in the end (delta: 890.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 17:59:10,256 INFO L168 Benchmark]: RCFGBuilder took 161.36 ms. Allocated memory is still 219.2 MB. Free memory was 196.8 MB in the beginning and 188.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-13 17:59:10,256 INFO L168 Benchmark]: TraceAbstraction took 446735.36 ms. Allocated memory was 219.2 MB in the beginning and 5.7 GB in the end (delta: 5.5 GB). Free memory was 187.4 MB in the beginning and 27.1 MB in the end (delta: 160.4 MB). Peak memory consumption was 6.2 GB. Max. memory is 8.0 GB. [2021-08-13 17:59:10,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 219.2 MB. Free memory was 200.4 MB in the beginning and 200.3 MB in the end (delta: 85.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.44 ms. Allocated memory is still 219.2 MB. Free memory was 199.3 MB in the beginning and 197.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.74 ms. Allocated memory is still 219.2 MB. Free memory was 197.8 MB in the beginning and 196.9 MB in the end (delta: 890.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 161.36 ms. Allocated memory is still 219.2 MB. Free memory was 196.8 MB in the beginning and 188.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 446735.36 ms. Allocated memory was 219.2 MB in the beginning and 5.7 GB in the end (delta: 5.5 GB). Free memory was 187.4 MB in the beginning and 27.1 MB in the end (delta: 160.4 MB). Peak memory consumption was 6.2 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 6/31 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 2990864 conditions, 480925 events (274416/480924 cut-off events. For 66809/66809 co-relation queries the response was YES. Maximal size of possible extension queue 46174. Compared 6276648 event pairs, 17297 based on Foata normal form. 0/446079 useless extension candidates. Maximal degree in co-relation 383656. Up to 162036 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 447.5ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 174.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 24 SDslu, 4 SDs, 0 SdLazy, 34 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=1, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.8ms SsaConstructionTime, 21.7ms SatisfiabilityAnalysisTime, 109.6ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 419.8ms, OverallIterations: 2, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 324.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 68 SDslu, 5 SDs, 0 SdLazy, 102 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 114.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=1, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 6.5ms SatisfiabilityAnalysisTime, 47.1ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 32 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 16081.1ms, OverallIterations: 7, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 13541.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 1455 SDslu, 87 SDs, 0 SdLazy, 3581 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1790.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 271 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4040 ImplicationChecksByTransitivity, 2480.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28771occurred in iteration=6, InterpolantAutomatonStates: 202, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 60.9ms SsaConstructionTime, 57.7ms SatisfiabilityAnalysisTime, 1159.3ms InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 586 SizeOfPredicates, 23 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 8/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 429644.7ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 427742.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 115 SDtfs, 1908 SDslu, 134 SDs, 0 SdLazy, 5050 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1919.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 2129.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=61337occurred in iteration=5, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.8ms SsaConstructionTime, 42.4ms SatisfiabilityAnalysisTime, 688.5ms InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 642 SizeOfPredicates, 21 NumberOfNonLiveVariables, 117 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 17/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !SESSION 2021-08-13 17:51:41.785 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.12 java.vendor=Debian BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl Command-line arguments: -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/pthread_nondet_loop_bound.bpl !ENTRY org.eclipse.osgi 4 0 2021-08-13 17:59:10.602 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5665f4612/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5665f4612/.metadata/.log.