/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 16:05:17,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 16:05:17,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 16:05:17,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 16:05:17,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 16:05:17,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 16:05:17,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 16:05:17,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 16:05:17,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 16:05:17,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 16:05:17,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 16:05:17,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 16:05:17,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 16:05:17,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 16:05:17,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 16:05:17,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 16:05:17,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 16:05:17,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 16:05:17,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 16:05:17,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 16:05:17,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 16:05:17,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 16:05:17,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 16:05:17,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 16:05:17,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 16:05:17,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 16:05:17,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 16:05:17,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 16:05:17,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 16:05:17,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 16:05:17,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 16:05:17,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 16:05:17,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 16:05:17,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 16:05:17,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 16:05:17,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 16:05:17,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 16:05:17,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 16:05:17,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 16:05:17,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 16:05:17,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 16:05:17,088 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-McrStrategy.epf [2020-04-18 16:05:17,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 16:05:17,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 16:05:17,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 16:05:17,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 16:05:17,117 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 16:05:17,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 16:05:17,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 16:05:17,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 16:05:17,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 16:05:17,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 16:05:17,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 16:05:17,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 16:05:17,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 16:05:17,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 16:05:17,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 16:05:17,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 16:05:17,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 16:05:17,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 16:05:17,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 16:05:17,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 16:05:17,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 16:05:17,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 16:05:17,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 16:05:17,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 16:05:17,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 16:05:17,121 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 16:05:17,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 16:05:17,121 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 16:05:17,122 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 16:05:17,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 16:05:17,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 16:05:17,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 16:05:17,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 16:05:17,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 16:05:17,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 16:05:17,467 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 16:05:17,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2020-04-18 16:05:17,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dbb9524/f66b73f31084439d9857f5f036a77a81/FLAGd86aeead0 [2020-04-18 16:05:18,098 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 16:05:18,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2020-04-18 16:05:18,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dbb9524/f66b73f31084439d9857f5f036a77a81/FLAGd86aeead0 [2020-04-18 16:05:18,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dbb9524/f66b73f31084439d9857f5f036a77a81 [2020-04-18 16:05:18,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 16:05:18,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 16:05:18,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 16:05:18,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 16:05:18,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 16:05:18,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:05:18" (1/1) ... [2020-04-18 16:05:18,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4268c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:18, skipping insertion in model container [2020-04-18 16:05:18,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:05:18" (1/1) ... [2020-04-18 16:05:18,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 16:05:18,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 16:05:18,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:05:18,961 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 16:05:19,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:05:19,089 INFO L208 MainTranslator]: Completed translation [2020-04-18 16:05:19,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19 WrapperNode [2020-04-18 16:05:19,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 16:05:19,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 16:05:19,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 16:05:19,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 16:05:19,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 16:05:19,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 16:05:19,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 16:05:19,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 16:05:19,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (1/1) ... [2020-04-18 16:05:19,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 16:05:19,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 16:05:19,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 16:05:19,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 16:05:19,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (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 [2020-04-18 16:05:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 16:05:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 16:05:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 16:05:19,232 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 16:05:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 16:05:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 16:05:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 16:05:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 16:05:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 16:05:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 16:05:19,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 16:05:19,234 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 16:05:19,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 16:05:19,596 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-04-18 16:05:19,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:05:19 BoogieIcfgContainer [2020-04-18 16:05:19,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 16:05:19,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 16:05:19,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 16:05:19,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 16:05:19,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:05:18" (1/3) ... [2020-04-18 16:05:19,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12243a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:05:19, skipping insertion in model container [2020-04-18 16:05:19,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:05:19" (2/3) ... [2020-04-18 16:05:19,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12243a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:05:19, skipping insertion in model container [2020-04-18 16:05:19,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:05:19" (3/3) ... [2020-04-18 16:05:19,608 INFO L109 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-1.i [2020-04-18 16:05:19,618 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 16:05:19,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 16:05:19,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 16:05:19,626 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 16:05:19,653 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,653 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,654 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,654 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,655 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,655 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,655 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,655 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,656 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,656 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,656 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,657 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,657 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,657 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,657 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,658 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,658 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,658 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,658 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,659 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,659 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,659 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,659 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,660 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,660 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,660 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,660 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,660 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,661 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,661 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,664 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,665 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,665 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,665 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,666 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,666 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,672 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,673 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,673 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,673 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,674 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,674 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:05:19,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 16:05:19,721 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 16:05:19,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 16:05:19,722 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 16:05:19,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 16:05:19,722 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 16:05:19,722 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 16:05:19,723 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 16:05:19,723 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 16:05:19,738 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 57 transitions, 124 flow [2020-04-18 16:05:19,849 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1741 states. [2020-04-18 16:05:19,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states. [2020-04-18 16:05:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 16:05:19,864 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:05:19,865 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:05:19,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:05:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash 627590565, now seen corresponding path program 1 times [2020-04-18 16:05:19,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:05:19,881 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [799962051] [2020-04-18 16:05:19,898 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:19,914 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 16:05:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-04-18 16:05:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 16:05:19,917 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:05:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:19,918 INFO L82 PathProgramCache]: Analyzing trace with hash 627590565, now seen corresponding path program 2 times [2020-04-18 16:05:19,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:05:19,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680783346] [2020-04-18 16:05:19,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:05:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:05:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:20,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680783346] [2020-04-18 16:05:20,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:05:20,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 16:05:20,442 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:05:20,467 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:20,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2020-04-18 16:05:20,479 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:05:20,529 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:05:20,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 16:05:20,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 16:05:20,535 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-04-18 16:05:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:20,593 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-04-18 16:05:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-04-18 16:05:20,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:05:20,596 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [799962051] [2020-04-18 16:05:20,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:05:20,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 16:05:20,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [799962051] [2020-04-18 16:05:20,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 16:05:20,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:05:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 16:05:20,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 16:05:20,605 INFO L87 Difference]: Start difference. First operand 1741 states. Second operand 6 states. [2020-04-18 16:05:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:20,821 INFO L93 Difference]: Finished difference Result 3726 states and 10822 transitions. [2020-04-18 16:05:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 16:05:20,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-04-18 16:05:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:05:20,866 INFO L225 Difference]: With dead ends: 3726 [2020-04-18 16:05:20,867 INFO L226 Difference]: Without dead ends: 1164 [2020-04-18 16:05:20,871 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 16:05:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2020-04-18 16:05:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 899. [2020-04-18 16:05:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-04-18 16:05:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 2439 transitions. [2020-04-18 16:05:21,049 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 2439 transitions. Word has length 22 [2020-04-18 16:05:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:05:21,050 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 2439 transitions. [2020-04-18 16:05:21,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 16:05:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 2439 transitions. [2020-04-18 16:05:21,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 16:05:21,060 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:05:21,060 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:05:21,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:05:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:21,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1828680335, now seen corresponding path program 1 times [2020-04-18 16:05:21,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:05:21,061 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1456733039] [2020-04-18 16:05:21,062 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:21,064 INFO L259 McrAutomatonBuilder]: Finished intersection with 53 states and 77 transitions. [2020-04-18 16:05:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-04-18 16:05:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-04-18 16:05:21,066 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:05:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:21,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1828680335, now seen corresponding path program 2 times [2020-04-18 16:05:21,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:05:21,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854986401] [2020-04-18 16:05:21,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:05:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:05:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:21,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854986401] [2020-04-18 16:05:21,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:05:21,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 16:05:21,340 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:05:21,343 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:21,349 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 47 transitions. [2020-04-18 16:05:21,350 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:05:21,458 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 16:05:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 16:05:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:05:21,459 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 9 states. [2020-04-18 16:05:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:21,660 INFO L93 Difference]: Finished difference Result 53 states and 77 transitions. [2020-04-18 16:05:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 77 transitions. [2020-04-18 16:05:21,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:05:21,662 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1456733039] [2020-04-18 16:05:21,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:05:21,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 16:05:21,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1456733039] [2020-04-18 16:05:21,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 16:05:21,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:05:21,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 16:05:21,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-04-18 16:05:21,665 INFO L87 Difference]: Start difference. First operand 899 states and 2439 transitions. Second operand 9 states. [2020-04-18 16:05:22,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:22,406 INFO L93 Difference]: Finished difference Result 2452 states and 6401 transitions. [2020-04-18 16:05:22,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 16:05:22,407 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-04-18 16:05:22,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:05:22,420 INFO L225 Difference]: With dead ends: 2452 [2020-04-18 16:05:22,420 INFO L226 Difference]: Without dead ends: 1838 [2020-04-18 16:05:22,422 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2020-04-18 16:05:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-04-18 16:05:22,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1195. [2020-04-18 16:05:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-04-18 16:05:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 3244 transitions. [2020-04-18 16:05:22,477 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 3244 transitions. Word has length 27 [2020-04-18 16:05:22,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:05:22,479 INFO L479 AbstractCegarLoop]: Abstraction has 1195 states and 3244 transitions. [2020-04-18 16:05:22,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 16:05:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 3244 transitions. [2020-04-18 16:05:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-04-18 16:05:22,482 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:05:22,482 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:05:22,482 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:05:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:22,483 INFO L82 PathProgramCache]: Analyzing trace with hash 637689491, now seen corresponding path program 1 times [2020-04-18 16:05:22,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:05:22,483 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [774113859] [2020-04-18 16:05:22,485 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:22,494 INFO L259 McrAutomatonBuilder]: Finished intersection with 248 states and 587 transitions. [2020-04-18 16:05:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-04-18 16:05:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-04-18 16:05:22,501 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:05:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:22,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1443640527, now seen corresponding path program 2 times [2020-04-18 16:05:22,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:05:22,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138522359] [2020-04-18 16:05:22,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:05:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:05:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:22,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138522359] [2020-04-18 16:05:22,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:05:22,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 16:05:22,673 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:05:22,676 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:22,690 INFO L259 McrAutomatonBuilder]: Finished intersection with 95 states and 176 transitions. [2020-04-18 16:05:22,690 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:05:22,745 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 16:05:22,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 16:05:22,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-04-18 16:05:22,776 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 8 states. [2020-04-18 16:05:23,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:23,084 INFO L93 Difference]: Finished difference Result 255 states and 593 transitions. [2020-04-18 16:05:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 593 transitions. [2020-04-18 16:05:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-04-18 16:05:23,086 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:05:23,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash 637689491, now seen corresponding path program 3 times [2020-04-18 16:05:23,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:05:23,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222350358] [2020-04-18 16:05:23,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:05:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:05:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:23,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222350358] [2020-04-18 16:05:23,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:05:23,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 16:05:23,212 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:05:23,215 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:23,227 INFO L259 McrAutomatonBuilder]: Finished intersection with 103 states and 192 transitions. [2020-04-18 16:05:23,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:05:23,367 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 16:05:23,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 16:05:23,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-04-18 16:05:23,369 INFO L87 Difference]: Start difference. First operand 255 states and 593 transitions. Second operand 11 states. [2020-04-18 16:05:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:23,818 INFO L93 Difference]: Finished difference Result 255 states and 593 transitions. [2020-04-18 16:05:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 593 transitions. [2020-04-18 16:05:23,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:05:23,819 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [774113859] [2020-04-18 16:05:23,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:05:23,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 16:05:23,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [774113859] [2020-04-18 16:05:23,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 16:05:23,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:05:23,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 16:05:23,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 16:05:23,823 INFO L87 Difference]: Start difference. First operand 1195 states and 3244 transitions. Second operand 15 states. [2020-04-18 16:05:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:25,821 INFO L93 Difference]: Finished difference Result 3588 states and 9243 transitions. [2020-04-18 16:05:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-04-18 16:05:25,821 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2020-04-18 16:05:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:05:25,839 INFO L225 Difference]: With dead ends: 3588 [2020-04-18 16:05:25,839 INFO L226 Difference]: Without dead ends: 2596 [2020-04-18 16:05:25,841 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1041, Invalid=4361, Unknown=0, NotChecked=0, Total=5402 [2020-04-18 16:05:25,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2020-04-18 16:05:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 1569. [2020-04-18 16:05:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-04-18 16:05:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 4154 transitions. [2020-04-18 16:05:25,894 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 4154 transitions. Word has length 32 [2020-04-18 16:05:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:05:25,895 INFO L479 AbstractCegarLoop]: Abstraction has 1569 states and 4154 transitions. [2020-04-18 16:05:25,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 16:05:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4154 transitions. [2020-04-18 16:05:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 16:05:25,898 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:05:25,898 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:05:25,899 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:05:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1255519260, now seen corresponding path program 1 times [2020-04-18 16:05:25,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:05:25,899 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1291999361] [2020-04-18 16:05:25,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:25,912 INFO L259 McrAutomatonBuilder]: Finished intersection with 428 states and 1067 transitions. [2020-04-18 16:05:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states. [2020-04-18 16:05:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 16:05:25,916 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:05:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:25,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1255519260, now seen corresponding path program 2 times [2020-04-18 16:05:25,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:05:25,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313456596] [2020-04-18 16:05:25,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:05:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:05:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:26,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313456596] [2020-04-18 16:05:26,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331570735] [2020-04-18 16:05:26,080 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 16:05:26,136 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 16:05:26,136 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 16:05:26,138 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 16:05:26,144 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 16:05:26,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:05:26,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:05:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:26,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 16:05:26,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-04-18 16:05:26,267 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:05:26,270 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:26,291 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 301 transitions. [2020-04-18 16:05:26,291 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:05:26,621 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 16:05:26,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 16:05:26,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-04-18 16:05:26,622 INFO L87 Difference]: Start difference. First operand 428 states. Second operand 22 states. [2020-04-18 16:05:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:27,851 INFO L93 Difference]: Finished difference Result 454 states and 1113 transitions. [2020-04-18 16:05:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1113 transitions. [2020-04-18 16:05:27,853 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:05:27,853 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1291999361] [2020-04-18 16:05:27,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:05:27,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-04-18 16:05:27,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1291999361] [2020-04-18 16:05:27,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 16:05:27,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:05:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 16:05:27,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1441, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 16:05:27,856 INFO L87 Difference]: Start difference. First operand 1569 states and 4154 transitions. Second operand 22 states. [2020-04-18 16:05:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:05:30,854 INFO L93 Difference]: Finished difference Result 5536 states and 14051 transitions. [2020-04-18 16:05:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-04-18 16:05:30,854 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2020-04-18 16:05:30,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:05:30,875 INFO L225 Difference]: With dead ends: 5536 [2020-04-18 16:05:30,875 INFO L226 Difference]: Without dead ends: 3788 [2020-04-18 16:05:30,878 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4151 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2184, Invalid=9158, Unknown=0, NotChecked=0, Total=11342 [2020-04-18 16:05:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-04-18 16:05:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2238. [2020-04-18 16:05:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2238 states. [2020-04-18 16:05:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 5949 transitions. [2020-04-18 16:05:30,954 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 5949 transitions. Word has length 37 [2020-04-18 16:05:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:05:30,955 INFO L479 AbstractCegarLoop]: Abstraction has 2238 states and 5949 transitions. [2020-04-18 16:05:30,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 16:05:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 5949 transitions. [2020-04-18 16:05:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:05:30,959 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:05:30,959 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:05:31,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 16:05:31,164 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:05:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash -520422237, now seen corresponding path program 1 times [2020-04-18 16:05:31,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:05:31,166 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1975820047] [2020-04-18 16:05:31,168 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:31,181 INFO L259 McrAutomatonBuilder]: Finished intersection with 773 states and 2002 transitions. [2020-04-18 16:05:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states. [2020-04-18 16:05:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:05:31,190 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:05:31,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:05:31,191 INFO L82 PathProgramCache]: Analyzing trace with hash -520422237, now seen corresponding path program 2 times [2020-04-18 16:05:31,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:05:31,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717511933] [2020-04-18 16:05:31,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:05:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:05:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:31,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717511933] [2020-04-18 16:05:31,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634041491] [2020-04-18 16:05:31,408 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 16:05:31,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 16:05:31,473 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 16:05:31,474 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-18 16:05:31,476 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 16:05:31,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:05:31,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:05:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:05:31,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 16:05:31,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-04-18 16:05:31,657 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:05:31,661 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:05:31,686 INFO L259 McrAutomatonBuilder]: Finished intersection with 200 states and 416 transitions. [2020-04-18 16:05:31,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:05:33,316 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 16:05:33,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 16:05:33,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=471, Unknown=1, NotChecked=0, Total=552 [2020-04-18 16:05:33,317 INFO L87 Difference]: Start difference. First operand 773 states. Second operand 24 states. [2020-04-18 16:05:37,787 WARN L192 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-04-18 16:05:42,344 WARN L192 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 43 DAG size of output: 18 [2020-04-18 16:05:48,476 WARN L192 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-04-18 16:05:50,775 WARN L192 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-04-18 16:05:59,017 WARN L192 SmtUtils]: Spent 5.53 s on a formula simplification. DAG size of input: 47 DAG size of output: 18 [2020-04-18 16:06:10,089 WARN L192 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 45 DAG size of output: 20 [2020-04-18 16:06:18,028 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-04-18 16:07:08,791 WARN L192 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-04-18 16:07:16,725 WARN L192 SmtUtils]: Spent 5.18 s on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-04-18 16:07:25,874 WARN L192 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-04-18 16:07:31,276 WARN L192 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-04-18 16:07:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:07:48,261 INFO L93 Difference]: Finished difference Result 1129 states and 2916 transitions. [2020-04-18 16:07:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2916 transitions. [2020-04-18 16:07:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:07:48,264 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:07:48,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:07:48,265 INFO L82 PathProgramCache]: Analyzing trace with hash -504312169, now seen corresponding path program 3 times [2020-04-18 16:07:48,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:07:48,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346291854] [2020-04-18 16:07:48,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:07:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:07:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:07:48,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346291854] [2020-04-18 16:07:48,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002292487] [2020-04-18 16:07:48,427 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-18 16:07:48,500 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-04-18 16:07:48,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 16:07:48,503 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-18 16:07:48,519 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 16:07:48,646 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:07:48,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:07:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:07:48,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 16:07:48,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-04-18 16:07:48,687 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:07:48,693 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:07:48,728 INFO L259 McrAutomatonBuilder]: Finished intersection with 215 states and 446 transitions. [2020-04-18 16:07:48,728 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:07:49,327 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 34 times. [2020-04-18 16:07:49,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 16:07:49,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1609, Invalid=5803, Unknown=70, NotChecked=0, Total=7482 [2020-04-18 16:07:49,330 INFO L87 Difference]: Start difference. First operand 1129 states and 2916 transitions. Second operand 26 states. [2020-04-18 16:07:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:07:58,514 INFO L93 Difference]: Finished difference Result 1149 states and 2946 transitions. [2020-04-18 16:07:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 2946 transitions. [2020-04-18 16:07:58,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:07:58,517 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1975820047] [2020-04-18 16:07:58,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:07:58,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-04-18 16:07:58,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1975820047] [2020-04-18 16:07:58,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-04-18 16:07:58,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:07:58,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-04-18 16:07:58,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2857, Invalid=10407, Unknown=76, NotChecked=0, Total=13340 [2020-04-18 16:07:58,521 INFO L87 Difference]: Start difference. First operand 2238 states and 5949 transitions. Second operand 39 states. [2020-04-18 16:08:09,550 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-04-18 16:08:23,694 WARN L192 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-04-18 16:08:26,448 WARN L192 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-04-18 16:08:36,875 WARN L192 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2020-04-18 16:08:49,419 WARN L192 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 47 DAG size of output: 18 [2020-04-18 16:09:02,684 WARN L192 SmtUtils]: Spent 7.60 s on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-04-18 16:09:42,028 WARN L192 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2020-04-18 16:09:47,047 WARN L192 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-04-18 16:09:54,826 WARN L192 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-04-18 16:09:57,175 WARN L192 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-04-18 16:10:00,994 WARN L192 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 Received shutdown request... [2020-04-18 16:10:02,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-04-18 16:10:03,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 16:10:03,081 WARN L544 AbstractCegarLoop]: Verification canceled [2020-04-18 16:10:03,087 WARN L228 ceAbstractionStarter]: Timeout [2020-04-18 16:10:03,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 04:10:03 BasicIcfg [2020-04-18 16:10:03,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 16:10:03,089 INFO L168 Benchmark]: Toolchain (without parser) took 284714.85 ms. Allocated memory was 137.9 MB in the beginning and 479.2 MB in the end (delta: 341.3 MB). Free memory was 101.4 MB in the beginning and 270.4 MB in the end (delta: -169.0 MB). Peak memory consumption was 172.3 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:03,090 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 16:10:03,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.19 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.4 MB in the beginning and 161.6 MB in the end (delta: -62.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:03,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 159.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:03,092 INFO L168 Benchmark]: Boogie Preprocessor took 30.65 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:03,093 INFO L168 Benchmark]: RCFGBuilder took 433.30 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 137.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:03,094 INFO L168 Benchmark]: TraceAbstraction took 283486.92 ms. Allocated memory was 202.4 MB in the beginning and 479.2 MB in the end (delta: 276.8 MB). Free memory was 136.8 MB in the beginning and 270.4 MB in the end (delta: -133.6 MB). Peak memory consumption was 143.2 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:03,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.19 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.4 MB in the beginning and 161.6 MB in the end (delta: -62.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 159.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.65 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.30 ms. Allocated memory is still 202.4 MB. Free memory was 158.1 MB in the beginning and 137.5 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 283486.92 ms. Allocated memory was 202.4 MB in the beginning and 479.2 MB in the end (delta: 276.8 MB). Free memory was 136.8 MB in the beginning and 270.4 MB in the end (delta: -133.6 MB). Peak memory consumption was 143.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was constructing difference of abstraction (2238states) and FLOYD_HOARE automaton (currently 114 states, 39 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 186 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 283.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 130.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 657 SDtfs, 5386 SDslu, 7746 SDs, 0 SdLazy, 2061 SolverSat, 536 SolverUnsat, 94 SolverUnknown, 0 SolverNotchecked, 42.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 832 GetRequests, 419 SyntacticMatches, 14 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22076 ImplicationChecksByTransitivity, 167.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2238occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 3485 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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