/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-01 17:09:32,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-01 17:09:32,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-01 17:09:32,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-01 17:09:32,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-01 17:09:32,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-01 17:09:32,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-01 17:09:32,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-01 17:09:32,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-01 17:09:32,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-01 17:09:32,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-01 17:09:32,728 INFO L138 SettingsManager]: * Use SBE=true [2021-06-01 17:09:32,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-01 17:09:32,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-01 17:09:32,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-01 17:09:32,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-01 17:09:32,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-01 17:09:32,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-01 17:09:32,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-01 17:09:32,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-01 17:09:32,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 17:09:32,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-01 17:09:32,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-01 17:09:32,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-01 17:09:32,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-01 17:09:32,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-01 17:09:32,731 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-01 17:09:32,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-01 17:09:32,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-01 17:09:32,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-01 17:09:32,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-01 17:09:32,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-01 17:09:32,946 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-01 17:09:32,947 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-01 17:09:32,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl [2021-06-01 17:09:32,947 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl' [2021-06-01 17:09:32,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-01 17:09:32,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-01 17:09:32,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-01 17:09:32,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-01 17:09:32,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-01 17:09:32,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:32,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:32,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-01 17:09:32,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-01 17:09:32,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-01 17:09:32,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-01 17:09:32,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:32,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:32,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:32,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:32,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:32,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:33,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... [2021-06-01 17:09:33,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-01 17:09:33,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-01 17:09:33,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-01 17:09:33,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-01 17:09:33,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 17:09:33,065 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-01 17:09:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-01 17:09:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-01 17:09:33,065 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess1 given in one single declaration [2021-06-01 17:09:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess1 [2021-06-01 17:09:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess1 [2021-06-01 17:09:33,066 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess2 given in one single declaration [2021-06-01 17:09:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess2 [2021-06-01 17:09:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess2 [2021-06-01 17:09:33,066 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-01 17:09:33,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-01 17:09:33,208 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-01 17:09:33,209 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 05:09:33 BoogieIcfgContainer [2021-06-01 17:09:33,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-01 17:09:33,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-01 17:09:33,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-01 17:09:33,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-01 17:09:33,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:09:32" (1/2) ... [2021-06-01 17:09:33,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a170fb3 and model type NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 05:09:33, skipping insertion in model container [2021-06-01 17:09:33,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 05:09:33" (2/2) ... [2021-06-01 17:09:33,218 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.bpl [2021-06-01 17:09:33,224 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-01 17:09:33,225 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-01 17:09:33,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-01 17:09:33,226 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-01 17:09:33,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,264 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,264 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,265 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,267 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 17:09:33,272 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-01 17:09:33,285 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-01 17:09:33,296 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 17:09:33,296 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 17:09:33,297 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 17:09:33,297 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 17:09:33,297 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 17:09:33,297 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 17:09:33,297 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 17:09:33,297 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-01 17:09:33,302 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 26 transitions, 74 flow [2021-06-01 17:09:33,329 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 94 states, 92 states have (on average 1.7826086956521738) internal successors, (164), 93 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 92 states have (on average 1.7826086956521738) internal successors, (164), 93 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-01 17:09:33,336 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:33,336 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:33,336 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:33,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1006041082, now seen corresponding path program 1 times [2021-06-01 17:09:33,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:33,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621671832] [2021-06-01 17:09:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:33,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:33,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621671832] [2021-06-01 17:09:33,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621671832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:33,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:33,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:09:33,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809740023] [2021-06-01 17:09:33,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 17:09:33,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:33,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 17:09:33,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:09:33,472 INFO L87 Difference]: Start difference. First operand has 94 states, 92 states have (on average 1.7826086956521738) internal successors, (164), 93 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:33,492 INFO L93 Difference]: Finished difference Result 86 states and 148 transitions. [2021-06-01 17:09:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 17:09:33,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-01 17:09:33,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:33,500 INFO L225 Difference]: With dead ends: 86 [2021-06-01 17:09:33,500 INFO L226 Difference]: Without dead ends: 84 [2021-06-01 17:09:33,501 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:09:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-06-01 17:09:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-06-01 17:09:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.7590361445783131) internal successors, (146), 83 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 146 transitions. [2021-06-01 17:09:33,540 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 146 transitions. Word has length 20 [2021-06-01 17:09:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:33,540 INFO L482 AbstractCegarLoop]: Abstraction has 84 states and 146 transitions. [2021-06-01 17:09:33,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 146 transitions. [2021-06-01 17:09:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-01 17:09:33,542 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:33,542 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:33,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-01 17:09:33,542 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:33,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2090863236, now seen corresponding path program 1 times [2021-06-01 17:09:33,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:33,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684599693] [2021-06-01 17:09:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:33,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:33,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684599693] [2021-06-01 17:09:33,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684599693] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:33,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:33,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:09:33,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212822349] [2021-06-01 17:09:33,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-01 17:09:33,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:33,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-01 17:09:33,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:09:33,619 INFO L87 Difference]: Start difference. First operand 84 states and 146 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:33,768 INFO L93 Difference]: Finished difference Result 177 states and 302 transitions. [2021-06-01 17:09:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-01 17:09:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-01 17:09:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:33,769 INFO L225 Difference]: With dead ends: 177 [2021-06-01 17:09:33,769 INFO L226 Difference]: Without dead ends: 156 [2021-06-01 17:09:33,770 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-06-01 17:09:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-06-01 17:09:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 104. [2021-06-01 17:09:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.7766990291262137) internal successors, (183), 103 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 183 transitions. [2021-06-01 17:09:33,777 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 183 transitions. Word has length 20 [2021-06-01 17:09:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:33,778 INFO L482 AbstractCegarLoop]: Abstraction has 104 states and 183 transitions. [2021-06-01 17:09:33,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 183 transitions. [2021-06-01 17:09:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-01 17:09:33,778 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:33,779 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:33,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-01 17:09:33,779 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash 364388134, now seen corresponding path program 2 times [2021-06-01 17:09:33,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:33,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539667905] [2021-06-01 17:09:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:33,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:33,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539667905] [2021-06-01 17:09:33,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539667905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:33,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:33,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-01 17:09:33,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123703213] [2021-06-01 17:09:33,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-01 17:09:33,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:33,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-01 17:09:33,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-01 17:09:33,861 INFO L87 Difference]: Start difference. First operand 104 states and 183 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:34,137 INFO L93 Difference]: Finished difference Result 252 states and 424 transitions. [2021-06-01 17:09:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-01 17:09:34,137 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-01 17:09:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:34,143 INFO L225 Difference]: With dead ends: 252 [2021-06-01 17:09:34,143 INFO L226 Difference]: Without dead ends: 179 [2021-06-01 17:09:34,144 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2021-06-01 17:09:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-06-01 17:09:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2021-06-01 17:09:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.7578125) internal successors, (225), 128 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 225 transitions. [2021-06-01 17:09:34,162 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 225 transitions. Word has length 20 [2021-06-01 17:09:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:34,162 INFO L482 AbstractCegarLoop]: Abstraction has 129 states and 225 transitions. [2021-06-01 17:09:34,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 225 transitions. [2021-06-01 17:09:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-01 17:09:34,163 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:34,163 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:34,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-01 17:09:34,163 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:34,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:34,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1716083462, now seen corresponding path program 3 times [2021-06-01 17:09:34,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:34,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211614407] [2021-06-01 17:09:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:09:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:09:34,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:09:34,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211614407] [2021-06-01 17:09:34,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211614407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:09:34,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:09:34,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-01 17:09:34,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173718919] [2021-06-01 17:09:34,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-01 17:09:34,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:09:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-01 17:09:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-01 17:09:34,225 INFO L87 Difference]: Start difference. First operand 129 states and 225 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:09:34,421 INFO L93 Difference]: Finished difference Result 297 states and 493 transitions. [2021-06-01 17:09:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-01 17:09:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-01 17:09:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:09:34,422 INFO L225 Difference]: With dead ends: 297 [2021-06-01 17:09:34,422 INFO L226 Difference]: Without dead ends: 267 [2021-06-01 17:09:34,423 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2021-06-01 17:09:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-06-01 17:09:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 129. [2021-06-01 17:09:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.7421875) internal successors, (223), 128 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 223 transitions. [2021-06-01 17:09:34,439 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 223 transitions. Word has length 20 [2021-06-01 17:09:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:09:34,440 INFO L482 AbstractCegarLoop]: Abstraction has 129 states and 223 transitions. [2021-06-01 17:09:34,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:09:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 223 transitions. [2021-06-01 17:09:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-01 17:09:34,443 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:09:34,443 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:09:34,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-01 17:09:34,444 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 17:09:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:09:34,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2121648040, now seen corresponding path program 4 times [2021-06-01 17:09:34,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:09:34,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033193421] [2021-06-01 17:09:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:09:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-01 17:09:34,458 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-01 17:09:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-01 17:09:34,462 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-01 17:09:34,472 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-01 17:09:34,472 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-01 17:09:34,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-01 17:09:34,474 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-01 17:09:34,481 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 05:09:34 BasicIcfg [2021-06-01 17:09:34,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-01 17:09:34,481 INFO L168 Benchmark]: Toolchain (without parser) took 1510.27 ms. Allocated memory is still 388.0 MB. Free memory was 366.9 MB in the beginning and 190.1 MB in the end (delta: 176.8 MB). Peak memory consumption was 178.1 MB. Max. memory is 16.0 GB. [2021-06-01 17:09:34,482 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 388.0 MB. Free memory was 367.9 MB in the beginning and 367.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 17:09:34,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.96 ms. Allocated memory is still 388.0 MB. Free memory was 366.8 MB in the beginning and 365.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 17:09:34,482 INFO L168 Benchmark]: Boogie Preprocessor took 9.72 ms. Allocated memory is still 388.0 MB. Free memory was 365.4 MB in the beginning and 364.5 MB in the end (delta: 834.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 17:09:34,482 INFO L168 Benchmark]: RCFGBuilder took 208.58 ms. Allocated memory is still 388.0 MB. Free memory was 364.5 MB in the beginning and 354.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-01 17:09:34,483 INFO L168 Benchmark]: TraceAbstraction took 1267.72 ms. Allocated memory is still 388.0 MB. Free memory was 353.9 MB in the beginning and 190.1 MB in the end (delta: 163.8 MB). Peak memory consumption was 165.5 MB. Max. memory is 16.0 GB. [2021-06-01 17:09:34,484 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 0.11 ms. Allocated memory is still 388.0 MB. Free memory was 367.9 MB in the beginning and 367.8 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.96 ms. Allocated memory is still 388.0 MB. Free memory was 366.8 MB in the beginning and 365.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.72 ms. Allocated memory is still 388.0 MB. Free memory was 365.4 MB in the beginning and 364.5 MB in the end (delta: 834.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 208.58 ms. Allocated memory is still 388.0 MB. Free memory was 364.5 MB in the beginning and 354.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1267.72 ms. Allocated memory is still 388.0 MB. Free memory was 353.9 MB in the beginning and 190.1 MB in the end (delta: 163.8 MB). Peak memory consumption was 165.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L22] 0 x := 0; VAL [x=0] [L24] FORK 0 fork 1 IncrementProcess1(); VAL [x=0] [L38] 1 localx := x; VAL [localx=0, x=0] [L25] FORK 0 fork 2 IncrementProcess2(); VAL [localx=0, x=0] [L54] 2 localx := x; VAL [localx=0, localx=0, x=0] [L55] 2 x := localx + 1; VAL [localx=0, localx=0, x=1] [L57] 2 localx := x; VAL [localx=1, localx=0, x=1] [L58] 2 x := localx + 1; VAL [localx=1, localx=0, x=2] [L39] 1 x := localx + 1; VAL [localx=1, localx=0, x=1] [L60] 2 localx := x; VAL [localx=1, localx=0, x=1] [L41] 1 localx := x; VAL [localx=1, localx=1, x=1] [L42] 1 x := localx + 1; VAL [localx=1, localx=1, x=2] [L44] 1 localx := x; VAL [localx=1, localx=2, x=2] [L45] 1 x := localx + 1; VAL [localx=1, localx=2, x=3] [L61] 2 x := localx + 1; VAL [localx=1, localx=2, x=2] [L26] JOIN 1 join 1; VAL [localx=1, localx=2, x=2] [L27] JOIN 2 join 2; VAL [localx=1, localx=2, x=2] [L28] 0 assert x >= 3; VAL [localx=1, localx=2, x=2] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1177.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 12.6ms, AutomataDifference: 678.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 161 SDtfs, 267 SDslu, 278 SDs, 0 SdLazy, 575 SolverSat, 156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 285.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 313.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 240 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.0ms SsaConstructionTime, 44.5ms SatisfiabilityAnalysisTime, 224.6ms InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...