/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/stack_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 16:09:10,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 16:09:10,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 16:09:10,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 16:09:10,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 16:09:10,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 16:09:10,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 16:09:10,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 16:09:10,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 16:09:10,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 16:09:10,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 16:09:10,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 16:09:10,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 16:09:10,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 16:09:10,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 16:09:10,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 16:09:10,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 16:09:10,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 16:09:10,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 16:09:10,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 16:09:10,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 16:09:10,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 16:09:10,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 16:09:10,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 16:09:10,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 16:09:10,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 16:09:10,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 16:09:10,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 16:09:10,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 16:09:10,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 16:09:10,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 16:09:10,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 16:09:10,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 16:09:10,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 16:09:10,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 16:09:10,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 16:09:10,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 16:09:10,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 16:09:10,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 16:09:10,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 16:09:10,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 16:09:10,955 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 16:09:10,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 16:09:10,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 16:09:10,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 16:09:10,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 16:09:10,981 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 16:09:10,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 16:09:10,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 16:09:10,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 16:09:10,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 16:09:10,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 16:09:10,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 16:09:10,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 16:09:10,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 16:09:10,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 16:09:10,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 16:09:10,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 16:09:10,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 16:09:10,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 16:09:10,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 16:09:10,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 16:09:10,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 16:09:10,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 16:09:10,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 16:09:10,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 16:09:10,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 16:09:10,987 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 16:09:10,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 16:09:10,987 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 16:09:10,988 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 16:09:10,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 16:09:10,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 16:09:11,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 16:09:11,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 16:09:11,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 16:09:11,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 16:09:11,296 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 16:09:11,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-1.i [2020-04-18 16:09:11,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4870da9b/aaeedf6ccbda4a5c812443735e22f431/FLAGdb97b02d5 [2020-04-18 16:09:11,973 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 16:09:11,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-1.i [2020-04-18 16:09:11,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4870da9b/aaeedf6ccbda4a5c812443735e22f431/FLAGdb97b02d5 [2020-04-18 16:09:12,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4870da9b/aaeedf6ccbda4a5c812443735e22f431 [2020-04-18 16:09:12,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 16:09:12,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 16:09:12,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 16:09:12,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 16:09:12,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 16:09:12,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:09:12" (1/1) ... [2020-04-18 16:09:12,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e77cbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:12, skipping insertion in model container [2020-04-18 16:09:12,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:09:12" (1/1) ... [2020-04-18 16:09:12,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 16:09:12,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 16:09:12,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:09:12,925 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 16:09:13,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:09:13,239 INFO L208 MainTranslator]: Completed translation [2020-04-18 16:09:13,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13 WrapperNode [2020-04-18 16:09:13,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 16:09:13,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 16:09:13,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 16:09:13,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 16:09:13,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 16:09:13,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 16:09:13,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 16:09:13,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 16:09:13,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (1/1) ... [2020-04-18 16:09:13,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 16:09:13,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 16:09:13,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 16:09:13,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 16:09:13,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (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 16:09:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 16:09:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 16:09:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 16:09:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 16:09:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 16:09:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 16:09:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 16:09:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 16:09:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 16:09:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 16:09:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 16:09:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 16:09:13,486 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 16:09:14,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 16:09:14,046 INFO L295 CfgBuilder]: Removed 26 assume(true) statements. [2020-04-18 16:09:14,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:09:14 BoogieIcfgContainer [2020-04-18 16:09:14,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 16:09:14,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 16:09:14,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 16:09:14,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 16:09:14,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:09:12" (1/3) ... [2020-04-18 16:09:14,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14355bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:09:14, skipping insertion in model container [2020-04-18 16:09:14,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:09:13" (2/3) ... [2020-04-18 16:09:14,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14355bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:09:14, skipping insertion in model container [2020-04-18 16:09:14,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:09:14" (3/3) ... [2020-04-18 16:09:14,059 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2020-04-18 16:09:14,070 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 16:09:14,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 16:09:14,078 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-18 16:09:14,079 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 16:09:14,138 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,138 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,139 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,139 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,139 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,139 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,140 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,140 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,140 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,140 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,140 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,141 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,141 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,141 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,141 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,142 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,142 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,142 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,142 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,142 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,143 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,143 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,143 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,143 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,143 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,144 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,144 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,144 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,144 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,144 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,145 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,145 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,145 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,145 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,145 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,145 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,146 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,146 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,146 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,146 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,147 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,147 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,147 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,147 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,148 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,148 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,148 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,148 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,148 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,149 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,149 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,149 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,149 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,149 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,150 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,150 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,150 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,150 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,151 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,151 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,151 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,151 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,152 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,152 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,152 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,152 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,152 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,153 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,154 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,154 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,154 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,154 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,155 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,155 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,155 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,155 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,155 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,156 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,156 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,156 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,156 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,157 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,157 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,157 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,157 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,157 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,158 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,158 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,158 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,158 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,158 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,159 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,159 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,159 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,159 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,159 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,159 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,160 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,160 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,160 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,160 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,161 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,161 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,161 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,161 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,162 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,162 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,162 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,162 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,162 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,163 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,163 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,163 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,163 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,164 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,164 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,164 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,164 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,164 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,165 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,165 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,165 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,165 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,165 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,166 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,166 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,166 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,166 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,166 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,167 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,167 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,167 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,167 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,171 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,171 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,171 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,171 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,172 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,172 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,172 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,172 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,172 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,173 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,173 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,173 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,173 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,173 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,173 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,174 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,174 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,174 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,174 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,174 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,175 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,175 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,175 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,181 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,181 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,181 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,181 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,181 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,182 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,182 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,182 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,182 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,182 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,183 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,183 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,183 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,183 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,183 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,184 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,184 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,184 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,184 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:09:14,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 16:09:14,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 16:09:14,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 16:09:14,225 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 16:09:14,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 16:09:14,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 16:09:14,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 16:09:14,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 16:09:14,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 16:09:14,246 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 140 places, 145 transitions, 312 flow [2020-04-18 16:09:14,638 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7081 states. [2020-04-18 16:09:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states. [2020-04-18 16:09:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 16:09:14,677 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:09:14,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:09:14,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:09:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:14,685 INFO L82 PathProgramCache]: Analyzing trace with hash -520625803, now seen corresponding path program 1 times [2020-04-18 16:09:14,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:09:14,693 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [425341207] [2020-04-18 16:09:14,713 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:14,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 48 transitions. [2020-04-18 16:09:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-04-18 16:09:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 16:09:14,736 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:09:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:14,736 INFO L82 PathProgramCache]: Analyzing trace with hash -520625803, now seen corresponding path program 2 times [2020-04-18 16:09:14,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:14,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198513127] [2020-04-18 16:09:14,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:15,223 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 16:09:15,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198513127] [2020-04-18 16:09:15,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:15,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:09:15,228 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:15,244 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:15,263 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 48 transitions. [2020-04-18 16:09:15,264 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:15,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:09:15,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:09:15,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:09:15,288 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-04-18 16:09:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:15,295 INFO L93 Difference]: Finished difference Result 49 states and 48 transitions. [2020-04-18 16:09:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 48 transitions. [2020-04-18 16:09:15,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:09:15,296 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [425341207] [2020-04-18 16:09:15,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:09:15,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 16:09:15,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [425341207] [2020-04-18 16:09:15,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 16:09:15,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:09:15,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:09:15,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:09:15,305 INFO L87 Difference]: Start difference. First operand 7081 states. Second operand 3 states. [2020-04-18 16:09:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:15,527 INFO L93 Difference]: Finished difference Result 10897 states and 29152 transitions. [2020-04-18 16:09:15,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 16:09:15,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-04-18 16:09:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:09:15,618 INFO L225 Difference]: With dead ends: 10897 [2020-04-18 16:09:15,618 INFO L226 Difference]: Without dead ends: 10765 [2020-04-18 16:09:15,620 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:09:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10765 states. [2020-04-18 16:09:15,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10765 to 9190. [2020-04-18 16:09:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9190 states. [2020-04-18 16:09:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 24894 transitions. [2020-04-18 16:09:16,115 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 24894 transitions. Word has length 48 [2020-04-18 16:09:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:09:16,116 INFO L479 AbstractCegarLoop]: Abstraction has 9190 states and 24894 transitions. [2020-04-18 16:09:16,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 16:09:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 24894 transitions. [2020-04-18 16:09:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 16:09:16,124 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:09:16,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:09:16,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:09:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:16,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1537873692, now seen corresponding path program 1 times [2020-04-18 16:09:16,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:09:16,128 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [866945662] [2020-04-18 16:09:16,130 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:16,133 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 49 transitions. [2020-04-18 16:09:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 16:09:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 16:09:16,137 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:09:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:16,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1537873692, now seen corresponding path program 2 times [2020-04-18 16:09:16,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:16,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975985487] [2020-04-18 16:09:16,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:16,278 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 16:09:16,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975985487] [2020-04-18 16:09:16,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:16,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:09:16,279 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:16,286 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:16,302 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 49 transitions. [2020-04-18 16:09:16,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:16,308 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:09:16,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:09:16,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:09:16,309 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 3 states. [2020-04-18 16:09:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:16,310 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2020-04-18 16:09:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2020-04-18 16:09:16,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:09:16,311 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [866945662] [2020-04-18 16:09:16,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:09:16,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 16:09:16,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [866945662] [2020-04-18 16:09:16,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 16:09:16,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:09:16,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:09:16,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:09:16,314 INFO L87 Difference]: Start difference. First operand 9190 states and 24894 transitions. Second operand 3 states. [2020-04-18 16:09:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:16,396 INFO L93 Difference]: Finished difference Result 8440 states and 22448 transitions. [2020-04-18 16:09:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 16:09:16,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-04-18 16:09:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:09:16,445 INFO L225 Difference]: With dead ends: 8440 [2020-04-18 16:09:16,445 INFO L226 Difference]: Without dead ends: 8263 [2020-04-18 16:09:16,447 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:09:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2020-04-18 16:09:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 8035. [2020-04-18 16:09:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8035 states. [2020-04-18 16:09:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8035 states to 8035 states and 21493 transitions. [2020-04-18 16:09:16,749 INFO L78 Accepts]: Start accepts. Automaton has 8035 states and 21493 transitions. Word has length 49 [2020-04-18 16:09:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:09:16,752 INFO L479 AbstractCegarLoop]: Abstraction has 8035 states and 21493 transitions. [2020-04-18 16:09:16,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 16:09:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states and 21493 transitions. [2020-04-18 16:09:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-04-18 16:09:16,758 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:09:16,759 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, 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 16:09:16,759 INFO L427 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:09:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:16,759 INFO L82 PathProgramCache]: Analyzing trace with hash 29890135, now seen corresponding path program 1 times [2020-04-18 16:09:16,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:09:16,760 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1588082542] [2020-04-18 16:09:16,762 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:16,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 57 transitions. [2020-04-18 16:09:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 16:09:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-04-18 16:09:16,767 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:09:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:16,768 INFO L82 PathProgramCache]: Analyzing trace with hash 29890135, now seen corresponding path program 2 times [2020-04-18 16:09:16,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:16,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897832078] [2020-04-18 16:09:16,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:16,859 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 16:09:16,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897832078] [2020-04-18 16:09:16,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:16,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:09:16,860 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:16,870 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:16,881 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 57 transitions. [2020-04-18 16:09:16,881 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:16,896 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:09:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:09:16,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:09:16,897 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 16:09:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:16,913 INFO L93 Difference]: Finished difference Result 58 states and 57 transitions. [2020-04-18 16:09:16,913 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2020-04-18 16:09:16,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:09:16,914 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1588082542] [2020-04-18 16:09:16,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:09:16,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 16:09:16,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1588082542] [2020-04-18 16:09:16,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 16:09:16,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:09:16,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:09:16,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:09:16,915 INFO L87 Difference]: Start difference. First operand 8035 states and 21493 transitions. Second operand 4 states. [2020-04-18 16:09:17,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:17,014 INFO L93 Difference]: Finished difference Result 11464 states and 30610 transitions. [2020-04-18 16:09:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 16:09:17,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-04-18 16:09:17,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:09:17,049 INFO L225 Difference]: With dead ends: 11464 [2020-04-18 16:09:17,049 INFO L226 Difference]: Without dead ends: 11464 [2020-04-18 16:09:17,049 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:09:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2020-04-18 16:09:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 8359. [2020-04-18 16:09:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8359 states. [2020-04-18 16:09:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8359 states to 8359 states and 22360 transitions. [2020-04-18 16:09:17,888 INFO L78 Accepts]: Start accepts. Automaton has 8359 states and 22360 transitions. Word has length 57 [2020-04-18 16:09:17,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:09:17,891 INFO L479 AbstractCegarLoop]: Abstraction has 8359 states and 22360 transitions. [2020-04-18 16:09:17,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 16:09:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8359 states and 22360 transitions. [2020-04-18 16:09:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-04-18 16:09:17,901 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:09:17,901 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:09:17,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:09:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:17,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1984788975, now seen corresponding path program 1 times [2020-04-18 16:09:17,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:09:17,902 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [825384162] [2020-04-18 16:09:17,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:17,908 INFO L259 McrAutomatonBuilder]: Finished intersection with 84 states and 83 transitions. [2020-04-18 16:09:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-04-18 16:09:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-04-18 16:09:17,911 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:09:17,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1984788975, now seen corresponding path program 2 times [2020-04-18 16:09:17,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:17,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678916759] [2020-04-18 16:09:17,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:09:18,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678916759] [2020-04-18 16:09:18,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994360397] [2020-04-18 16:09:18,101 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 16:09:18,210 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 16:09:18,210 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 16:09:18,213 INFO L264 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2020-04-18 16:09:18,220 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 16:09:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:09:18,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 16:09:18,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-04-18 16:09:18,277 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:18,306 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:18,329 INFO L259 McrAutomatonBuilder]: Finished intersection with 84 states and 83 transitions. [2020-04-18 16:09:18,330 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:18,368 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:09:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 16:09:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 16:09:18,369 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 7 states. [2020-04-18 16:09:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:18,414 INFO L93 Difference]: Finished difference Result 84 states and 83 transitions. [2020-04-18 16:09:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 83 transitions. [2020-04-18 16:09:18,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:09:18,416 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [825384162] [2020-04-18 16:09:18,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:09:18,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 16:09:18,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [825384162] [2020-04-18 16:09:18,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 16:09:18,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:09:18,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 16:09:18,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:09:18,418 INFO L87 Difference]: Start difference. First operand 8359 states and 22360 transitions. Second operand 7 states. [2020-04-18 16:09:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:18,545 INFO L93 Difference]: Finished difference Result 12349 states and 32930 transitions. [2020-04-18 16:09:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 16:09:18,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-04-18 16:09:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:09:18,582 INFO L225 Difference]: With dead ends: 12349 [2020-04-18 16:09:18,583 INFO L226 Difference]: Without dead ends: 12349 [2020-04-18 16:09:18,584 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:09:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12349 states. [2020-04-18 16:09:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12349 to 10774. [2020-04-18 16:09:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10774 states. [2020-04-18 16:09:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10774 states to 10774 states and 28968 transitions. [2020-04-18 16:09:18,898 INFO L78 Accepts]: Start accepts. Automaton has 10774 states and 28968 transitions. Word has length 83 [2020-04-18 16:09:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:09:18,900 INFO L479 AbstractCegarLoop]: Abstraction has 10774 states and 28968 transitions. [2020-04-18 16:09:18,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 16:09:18,901 INFO L276 IsEmpty]: Start isEmpty. Operand 10774 states and 28968 transitions. [2020-04-18 16:09:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-04-18 16:09:18,915 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:09:18,915 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:09:19,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 16:09:19,120 INFO L427 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:09:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1738266616, now seen corresponding path program 1 times [2020-04-18 16:09:19,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:09:19,122 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1201391920] [2020-04-18 16:09:19,128 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:19,150 INFO L259 McrAutomatonBuilder]: Finished intersection with 1030 states and 1974 transitions. [2020-04-18 16:09:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states. [2020-04-18 16:09:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-04-18 16:09:19,158 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:09:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:19,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1027699074, now seen corresponding path program 2 times [2020-04-18 16:09:19,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:19,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996025663] [2020-04-18 16:09:19,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:19,214 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 16:09:19,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996025663] [2020-04-18 16:09:19,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:19,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:09:19,215 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:19,231 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:19,462 INFO L259 McrAutomatonBuilder]: Finished intersection with 452 states and 818 transitions. [2020-04-18 16:09:19,462 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:19,478 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 16:09:19,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:09:19,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:09:19,479 INFO L87 Difference]: Start difference. First operand 1030 states. Second operand 4 states. [2020-04-18 16:09:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:19,510 INFO L93 Difference]: Finished difference Result 1030 states and 1974 transitions. [2020-04-18 16:09:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1974 transitions. [2020-04-18 16:09:19,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:09:19,515 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1201391920] [2020-04-18 16:09:19,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:09:19,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 16:09:19,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1201391920] [2020-04-18 16:09:19,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 16:09:19,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:09:19,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:09:19,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:09:19,516 INFO L87 Difference]: Start difference. First operand 10774 states and 28968 transitions. Second operand 4 states. [2020-04-18 16:09:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:19,590 INFO L93 Difference]: Finished difference Result 7147 states and 18116 transitions. [2020-04-18 16:09:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 16:09:19,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-04-18 16:09:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:09:19,610 INFO L225 Difference]: With dead ends: 7147 [2020-04-18 16:09:19,610 INFO L226 Difference]: Without dead ends: 7009 [2020-04-18 16:09:19,610 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:09:19,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7009 states. [2020-04-18 16:09:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7009 to 5434. [2020-04-18 16:09:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5434 states. [2020-04-18 16:09:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 13782 transitions. [2020-04-18 16:09:19,728 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 13782 transitions. Word has length 84 [2020-04-18 16:09:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:09:19,728 INFO L479 AbstractCegarLoop]: Abstraction has 5434 states and 13782 transitions. [2020-04-18 16:09:19,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 16:09:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 13782 transitions. [2020-04-18 16:09:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-04-18 16:09:19,736 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:09:19,736 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:09:19,737 INFO L427 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:09:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1569765253, now seen corresponding path program 1 times [2020-04-18 16:09:19,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:09:19,737 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1115149843] [2020-04-18 16:09:19,742 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:19,771 INFO L259 McrAutomatonBuilder]: Finished intersection with 1058 states and 2029 transitions. [2020-04-18 16:09:19,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states. [2020-04-18 16:09:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-04-18 16:09:19,781 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:09:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:19,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2026006115, now seen corresponding path program 2 times [2020-04-18 16:09:19,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:19,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148488267] [2020-04-18 16:09:19,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:19,844 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 16:09:19,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148488267] [2020-04-18 16:09:19,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:19,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:09:19,845 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:19,861 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:20,063 INFO L259 McrAutomatonBuilder]: Finished intersection with 470 states and 853 transitions. [2020-04-18 16:09:20,064 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:20,079 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 16:09:20,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:09:20,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:09:20,080 INFO L87 Difference]: Start difference. First operand 1058 states. Second operand 4 states. [2020-04-18 16:09:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:20,117 INFO L93 Difference]: Finished difference Result 1078 states and 2048 transitions. [2020-04-18 16:09:20,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2048 transitions. [2020-04-18 16:09:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-04-18 16:09:20,119 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:09:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1569765253, now seen corresponding path program 3 times [2020-04-18 16:09:20,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:20,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444501548] [2020-04-18 16:09:20,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:20,216 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 16:09:20,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444501548] [2020-04-18 16:09:20,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:20,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 16:09:20,218 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:20,233 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:20,323 INFO L259 McrAutomatonBuilder]: Finished intersection with 312 states and 537 transitions. [2020-04-18 16:09:20,323 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:20,429 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 16:09:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 16:09:20,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-04-18 16:09:20,430 INFO L87 Difference]: Start difference. First operand 1078 states and 2048 transitions. Second operand 9 states. [2020-04-18 16:09:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:20,669 INFO L93 Difference]: Finished difference Result 1186 states and 2243 transitions. [2020-04-18 16:09:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 2243 transitions. [2020-04-18 16:09:20,671 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:09:20,672 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1115149843] [2020-04-18 16:09:20,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:09:20,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 16:09:20,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1115149843] [2020-04-18 16:09:20,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 16:09:20,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:09:20,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 16:09:20,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-04-18 16:09:20,674 INFO L87 Difference]: Start difference. First operand 5434 states and 13782 transitions. Second operand 11 states. [2020-04-18 16:09:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:21,537 INFO L93 Difference]: Finished difference Result 11134 states and 27610 transitions. [2020-04-18 16:09:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 16:09:21,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-04-18 16:09:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:09:21,563 INFO L225 Difference]: With dead ends: 11134 [2020-04-18 16:09:21,564 INFO L226 Difference]: Without dead ends: 11134 [2020-04-18 16:09:21,565 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=303, Invalid=1337, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 16:09:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11134 states. [2020-04-18 16:09:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11134 to 5797. [2020-04-18 16:09:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5797 states. [2020-04-18 16:09:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 14657 transitions. [2020-04-18 16:09:21,718 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 14657 transitions. Word has length 85 [2020-04-18 16:09:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:09:21,719 INFO L479 AbstractCegarLoop]: Abstraction has 5797 states and 14657 transitions. [2020-04-18 16:09:21,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 16:09:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 14657 transitions. [2020-04-18 16:09:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-04-18 16:09:21,727 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:09:21,728 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, 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, 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 16:09:21,728 INFO L427 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:09:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:21,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1727570691, now seen corresponding path program 1 times [2020-04-18 16:09:21,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:09:21,729 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1860006949] [2020-04-18 16:09:21,735 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:21,789 INFO L259 McrAutomatonBuilder]: Finished intersection with 1428 states and 2759 transitions. [2020-04-18 16:09:21,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states. [2020-04-18 16:09:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-04-18 16:09:21,802 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:09:21,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:21,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1161130405, now seen corresponding path program 2 times [2020-04-18 16:09:21,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:21,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013490409] [2020-04-18 16:09:21,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:21,847 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 16:09:21,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013490409] [2020-04-18 16:09:21,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:21,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:09:21,848 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:21,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:22,106 INFO L259 McrAutomatonBuilder]: Finished intersection with 560 states and 1023 transitions. [2020-04-18 16:09:22,106 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:22,126 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 16:09:22,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:09:22,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:09:22,127 INFO L87 Difference]: Start difference. First operand 1428 states. Second operand 4 states. [2020-04-18 16:09:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:09:22,168 INFO L93 Difference]: Finished difference Result 1458 states and 2788 transitions. [2020-04-18 16:09:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2788 transitions. [2020-04-18 16:09:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-04-18 16:09:22,171 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:09:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:09:22,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1727570691, now seen corresponding path program 3 times [2020-04-18 16:09:22,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:09:22,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830692139] [2020-04-18 16:09:22,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:09:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:09:23,486 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2020-04-18 16:09:23,708 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2020-04-18 16:09:24,000 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2020-04-18 16:09:24,317 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 16:09:24,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830692139] [2020-04-18 16:09:24,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:09:24,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-04-18 16:09:24,318 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:09:24,336 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:09:24,429 INFO L259 McrAutomatonBuilder]: Finished intersection with 322 states and 547 transitions. [2020-04-18 16:09:24,429 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:09:26,792 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 54 times. [2020-04-18 16:09:26,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-04-18 16:09:26,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 16:09:26,793 INFO L87 Difference]: Start difference. First operand 1458 states and 2788 transitions. Second operand 35 states. [2020-04-18 16:09:31,252 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 40 [2020-04-18 16:09:31,642 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 43 [2020-04-18 16:09:32,407 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 36 [2020-04-18 16:09:33,182 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2020-04-18 16:09:34,612 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-04-18 16:09:36,269 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-04-18 16:09:37,386 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-04-18 16:09:39,091 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-04-18 16:09:41,234 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-04-18 16:09:42,077 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-04-18 16:09:42,610 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-04-18 16:09:43,008 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-04-18 16:09:43,536 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-04-18 16:09:43,930 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-04-18 16:09:44,740 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 52 [2020-04-18 16:09:45,939 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-04-18 16:09:46,861 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2020-04-18 16:09:47,589 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-04-18 16:09:48,986 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2020-04-18 16:09:49,824 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-04-18 16:09:52,973 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-04-18 16:09:53,367 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-04-18 16:09:54,092 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-04-18 16:09:55,567 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-04-18 16:09:57,141 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-04-18 16:09:58,637 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-04-18 16:09:59,897 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-04-18 16:10:00,793 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-04-18 16:10:01,635 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-04-18 16:10:03,700 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-04-18 16:10:04,401 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-04-18 16:10:05,114 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-04-18 16:10:05,767 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-04-18 16:10:06,260 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-04-18 16:10:07,576 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-04-18 16:10:08,354 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-04-18 16:10:10,313 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-04-18 16:10:11,406 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-04-18 16:10:12,707 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-04-18 16:10:13,905 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-04-18 16:10:14,976 WARN L192 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-04-18 16:10:16,217 WARN L192 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2020-04-18 16:10:16,883 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-04-18 16:10:17,544 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-04-18 16:10:18,444 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-04-18 16:10:19,196 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2020-04-18 16:10:20,193 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-04-18 16:10:21,512 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2020-04-18 16:10:22,739 WARN L192 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2020-04-18 16:10:24,160 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-04-18 16:10:25,564 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-04-18 16:10:26,405 WARN L192 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2020-04-18 16:10:26,973 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-04-18 16:10:27,806 WARN L192 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2020-04-18 16:10:28,433 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-04-18 16:10:29,103 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-04-18 16:10:30,227 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2020-04-18 16:10:31,322 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2020-04-18 16:10:32,355 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-04-18 16:10:33,937 WARN L192 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2020-04-18 16:10:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:38,516 INFO L93 Difference]: Finished difference Result 2382 states and 4557 transitions. [2020-04-18 16:10:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4557 transitions. [2020-04-18 16:10:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-04-18 16:10:38,521 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:10:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1316230305, now seen corresponding path program 4 times [2020-04-18 16:10:38,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:38,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665777824] [2020-04-18 16:10:38,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:39,409 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 16:10:39,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665777824] [2020-04-18 16:10:39,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:39,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-04-18 16:10:39,410 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:39,425 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:39,492 INFO L259 McrAutomatonBuilder]: Finished intersection with 204 states and 311 transitions. [2020-04-18 16:10:39,492 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:52,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 16:10:52,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 16:10:52,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3964, Invalid=21796, Unknown=0, NotChecked=0, Total=25760 [2020-04-18 16:10:52,202 INFO L87 Difference]: Start difference. First operand 2382 states and 4557 transitions. Second operand 23 states. [2020-04-18 16:10:56,671 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-04-18 16:10:58,463 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-04-18 16:10:58,792 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-04-18 16:11:00,007 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-04-18 16:11:00,466 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-04-18 16:11:00,915 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-04-18 16:11:01,418 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-04-18 16:11:02,587 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-04-18 16:11:03,025 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-04-18 16:11:03,633 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-04-18 16:11:04,815 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-04-18 16:11:05,659 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-04-18 16:11:06,300 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-04-18 16:11:06,999 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-04-18 16:11:07,740 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-04-18 16:11:08,087 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-04-18 16:11:08,409 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-04-18 16:11:08,746 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-04-18 16:11:09,246 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-04-18 16:11:09,744 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-04-18 16:11:10,267 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-04-18 16:11:10,957 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-04-18 16:11:11,533 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-04-18 16:11:12,286 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-04-18 16:11:13,049 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2020-04-18 16:11:13,985 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-04-18 16:11:14,477 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-04-18 16:11:15,106 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-04-18 16:11:15,664 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-04-18 16:11:16,352 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-04-18 16:11:17,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:17,105 INFO L93 Difference]: Finished difference Result 2382 states and 4557 transitions. [2020-04-18 16:11:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4557 transitions. [2020-04-18 16:11:17,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:11:17,108 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1860006949] [2020-04-18 16:11:17,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:11:17,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-04-18 16:11:17,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1860006949] [2020-04-18 16:11:17,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-04-18 16:11:17,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:11:17,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-04-18 16:11:17,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8113, Invalid=38759, Unknown=0, NotChecked=0, Total=46872 [2020-04-18 16:11:17,118 INFO L87 Difference]: Start difference. First operand 5797 states and 14657 transitions. Second operand 58 states. [2020-04-18 16:11:18,575 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-04-18 16:11:18,929 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-04-18 16:11:19,562 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-04-18 16:11:19,796 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-04-18 16:11:20,091 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-04-18 16:11:21,065 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2020-04-18 16:11:21,468 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2020-04-18 16:11:22,422 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2020-04-18 16:11:23,062 WARN L192 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2020-04-18 16:11:23,529 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-04-18 16:11:23,974 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-04-18 16:11:24,804 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-04-18 16:11:25,817 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2020-04-18 16:11:26,374 WARN L192 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-04-18 16:11:26,978 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-04-18 16:11:27,416 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-04-18 16:11:28,173 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-04-18 16:11:28,509 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-04-18 16:11:28,887 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-04-18 16:11:29,351 WARN L192 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-04-18 16:11:29,887 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-04-18 16:11:30,397 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-04-18 16:11:30,699 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-04-18 16:11:31,082 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-04-18 16:11:31,651 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-04-18 16:11:32,361 WARN L192 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2020-04-18 16:11:32,824 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-04-18 16:11:33,232 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-04-18 16:11:33,554 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-04-18 16:11:34,098 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-04-18 16:11:34,582 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2020-04-18 16:11:35,037 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-04-18 16:11:35,575 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-04-18 16:11:36,248 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-04-18 16:11:36,933 WARN L192 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2020-04-18 16:11:37,420 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-04-18 16:11:37,855 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-04-18 16:11:38,194 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-04-18 16:11:38,890 WARN L192 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2020-04-18 16:11:39,793 WARN L192 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-04-18 16:11:40,467 WARN L192 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2020-04-18 16:11:40,727 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-04-18 16:11:41,501 WARN L192 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-04-18 16:11:41,983 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-04-18 16:11:42,446 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-04-18 16:11:43,380 WARN L192 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 93 [2020-04-18 16:11:44,021 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-04-18 16:11:44,983 WARN L192 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2020-04-18 16:11:45,467 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-04-18 16:11:46,029 WARN L192 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2020-04-18 16:11:46,511 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2020-04-18 16:11:46,786 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-04-18 16:11:47,771 WARN L192 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 93 [2020-04-18 16:11:48,110 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-04-18 16:11:48,549 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-04-18 16:11:49,656 WARN L192 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 97 [2020-04-18 16:11:50,347 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-04-18 16:11:51,337 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-04-18 16:11:51,657 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-04-18 16:11:52,380 WARN L192 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2020-04-18 16:11:53,109 WARN L192 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-04-18 16:11:53,404 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-04-18 16:11:53,935 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-04-18 16:11:54,573 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-04-18 16:11:55,043 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-04-18 16:11:55,607 WARN L192 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-04-18 16:11:56,189 WARN L192 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-04-18 16:11:56,600 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-04-18 16:11:57,265 WARN L192 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 79 [2020-04-18 16:11:57,952 WARN L192 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2020-04-18 16:11:58,897 WARN L192 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2020-04-18 16:11:59,210 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-04-18 16:11:59,968 WARN L192 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2020-04-18 16:12:00,442 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-04-18 16:12:01,121 WARN L192 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-04-18 16:12:01,855 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-04-18 16:12:02,682 WARN L192 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2020-04-18 16:12:03,008 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-04-18 16:12:04,017 WARN L192 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2020-04-18 16:12:04,429 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-04-18 16:12:04,913 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2020-04-18 16:12:05,263 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-04-18 16:12:05,644 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-04-18 16:12:06,209 WARN L192 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 79 [2020-04-18 16:12:06,498 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-04-18 16:12:06,698 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-04-18 16:12:07,001 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-04-18 16:12:07,348 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-04-18 16:12:07,812 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-04-18 16:12:08,090 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-04-18 16:12:08,447 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-04-18 16:12:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:12:08,491 INFO L93 Difference]: Finished difference Result 20086 states and 49744 transitions. [2020-04-18 16:12:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-04-18 16:12:08,491 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 95 [2020-04-18 16:12:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:12:08,531 INFO L225 Difference]: With dead ends: 20086 [2020-04-18 16:12:08,531 INFO L226 Difference]: Without dead ends: 20086 [2020-04-18 16:12:08,539 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 341 SyntacticMatches, 1 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42634 ImplicationChecksByTransitivity, 119.1s TimeCoverageRelationStatistics Valid=12740, Invalid=99820, Unknown=0, NotChecked=0, Total=112560 [2020-04-18 16:12:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20086 states. [2020-04-18 16:12:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20086 to 7789. [2020-04-18 16:12:08,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7789 states. [2020-04-18 16:12:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 19845 transitions. [2020-04-18 16:12:08,803 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 19845 transitions. Word has length 95 [2020-04-18 16:12:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:12:08,803 INFO L479 AbstractCegarLoop]: Abstraction has 7789 states and 19845 transitions. [2020-04-18 16:12:08,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-04-18 16:12:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 19845 transitions. [2020-04-18 16:12:08,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-04-18 16:12:08,816 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:12:08,816 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-04-18 16:12:08,816 INFO L427 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:12:08,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:12:08,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1752284981, now seen corresponding path program 3 times [2020-04-18 16:12:08,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:12:08,817 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [349761334] [2020-04-18 16:12:08,824 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:12:08,826 INFO L259 McrAutomatonBuilder]: Finished intersection with 119 states and 118 transitions. [2020-04-18 16:12:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-04-18 16:12:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-04-18 16:12:08,828 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:12:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:12:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1752284981, now seen corresponding path program 4 times [2020-04-18 16:12:08,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:12:08,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213184111] [2020-04-18 16:12:08,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:12:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:12:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:12:08,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213184111] [2020-04-18 16:12:08,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225123467] [2020-04-18 16:12:08,960 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 16:12:09,058 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 16:12:09,058 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 16:12:09,060 INFO L264 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2020-04-18 16:12:09,073 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 16:12:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:12:09,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 16:12:09,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-04-18 16:12:09,117 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:12:09,144 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:12:09,190 INFO L259 McrAutomatonBuilder]: Finished intersection with 119 states and 118 transitions. [2020-04-18 16:12:09,190 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:12:09,225 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:12:09,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 16:12:09,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:12:09,226 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 9 states. [2020-04-18 16:12:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:12:09,290 INFO L93 Difference]: Finished difference Result 119 states and 118 transitions. [2020-04-18 16:12:09,290 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 118 transitions. [2020-04-18 16:12:09,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:12:09,291 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [349761334] [2020-04-18 16:12:09,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:12:09,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 16:12:09,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [349761334] [2020-04-18 16:12:09,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 16:12:09,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:12:09,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 16:12:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-04-18 16:12:09,293 INFO L87 Difference]: Start difference. First operand 7789 states and 19845 transitions. Second operand 9 states. [2020-04-18 16:12:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:12:09,375 INFO L93 Difference]: Finished difference Result 10867 states and 27556 transitions. [2020-04-18 16:12:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 16:12:09,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 118 [2020-04-18 16:12:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:12:09,393 INFO L225 Difference]: With dead ends: 10867 [2020-04-18 16:12:09,393 INFO L226 Difference]: Without dead ends: 10867 [2020-04-18 16:12:09,394 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-04-18 16:12:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10867 states. [2020-04-18 16:12:09,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10867 to 9559. [2020-04-18 16:12:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9559 states. [2020-04-18 16:12:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9559 states to 9559 states and 24413 transitions. [2020-04-18 16:12:09,602 INFO L78 Accepts]: Start accepts. Automaton has 9559 states and 24413 transitions. Word has length 118 [2020-04-18 16:12:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:12:09,603 INFO L479 AbstractCegarLoop]: Abstraction has 9559 states and 24413 transitions. [2020-04-18 16:12:09,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 16:12:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 9559 states and 24413 transitions. [2020-04-18 16:12:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-04-18 16:12:09,619 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:12:09,619 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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 16:12:09,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 16:12:09,833 INFO L427 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 16:12:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:12:09,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1933294969, now seen corresponding path program 1 times [2020-04-18 16:12:09,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:12:09,834 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [555909503] [2020-04-18 16:12:09,842 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:12:10,008 INFO L259 McrAutomatonBuilder]: Finished intersection with 2316 states and 4511 transitions. [2020-04-18 16:12:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states. [2020-04-18 16:12:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-04-18 16:12:10,027 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:12:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:12:10,027 INFO L82 PathProgramCache]: Analyzing trace with hash 503364069, now seen corresponding path program 2 times [2020-04-18 16:12:10,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:12:10,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281794843] [2020-04-18 16:12:10,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:12:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:12:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-04-18 16:12:10,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281794843] [2020-04-18 16:12:10,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:12:10,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:12:10,078 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:12:10,104 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:12:10,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 576 states and 1031 transitions. [2020-04-18 16:12:10,357 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:12:10,361 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:12:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:12:10,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 16:12:10,362 INFO L87 Difference]: Start difference. First operand 2316 states. Second operand 3 states. [2020-04-18 16:12:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:12:10,378 INFO L93 Difference]: Finished difference Result 2520 states and 4864 transitions. [2020-04-18 16:12:10,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 4864 transitions. [2020-04-18 16:12:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-04-18 16:12:10,382 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:12:10,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:12:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash 924115029, now seen corresponding path program 3 times [2020-04-18 16:12:10,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:12:10,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894959976] [2020-04-18 16:12:10,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:12:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:12:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-04-18 16:12:10,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894959976] [2020-04-18 16:12:10,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:12:10,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 16:12:10,450 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:12:10,477 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:12:10,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 449 states and 777 transitions. [2020-04-18 16:12:10,783 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:12:10,831 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 16:12:10,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 16:12:10,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:12:10,831 INFO L87 Difference]: Start difference. First operand 2520 states and 4864 transitions. Second operand 8 states. [2020-04-18 16:12:10,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:12:10,933 INFO L93 Difference]: Finished difference Result 2959 states and 5661 transitions. [2020-04-18 16:12:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 5661 transitions. [2020-04-18 16:12:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-04-18 16:12:10,938 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:12:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:12:10,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1933294969, now seen corresponding path program 4 times [2020-04-18 16:12:10,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:12:10,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857801594] [2020-04-18 16:12:10,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:12:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 16:12:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 16:12:11,068 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 16:12:11,068 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 16:12:11,068 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 16:12:11,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 04:12:11 BasicIcfg [2020-04-18 16:12:11,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 16:12:11,241 INFO L168 Benchmark]: Toolchain (without parser) took 178998.28 ms. Allocated memory was 145.8 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 101.8 MB in the beginning and 94.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-04-18 16:12:11,242 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 16:12:11,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 974.46 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 99.8 MB in the beginning and 133.2 MB in the end (delta: -33.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-04-18 16:12:11,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.68 ms. Allocated memory is still 202.4 MB. Free memory was 133.2 MB in the beginning and 129.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-04-18 16:12:11,243 INFO L168 Benchmark]: Boogie Preprocessor took 67.35 ms. Allocated memory is still 202.4 MB. Free memory was 129.9 MB in the beginning and 128.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 16:12:11,243 INFO L168 Benchmark]: RCFGBuilder took 624.67 ms. Allocated memory is still 202.4 MB. Free memory was 128.0 MB in the beginning and 94.8 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-04-18 16:12:11,244 INFO L168 Benchmark]: TraceAbstraction took 177189.07 ms. Allocated memory was 202.4 MB in the beginning and 1.2 GB in the end (delta: 949.0 MB). Free memory was 94.8 MB in the beginning and 94.7 MB in the end (delta: 115.7 kB). Peak memory consumption was 949.1 MB. Max. memory is 7.1 GB. [2020-04-18 16:12:11,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 974.46 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 99.8 MB in the beginning and 133.2 MB in the end (delta: -33.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 116.68 ms. Allocated memory is still 202.4 MB. Free memory was 133.2 MB in the beginning and 129.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.35 ms. Allocated memory is still 202.4 MB. Free memory was 129.9 MB in the beginning and 128.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 624.67 ms. Allocated memory is still 202.4 MB. Free memory was 128.0 MB in the beginning and 94.8 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 177189.07 ms. Allocated memory was 202.4 MB in the beginning and 1.2 GB in the end (delta: 949.0 MB). Free memory was 94.8 MB in the beginning and 94.7 MB in the end (delta: 115.7 kB). Peak memory consumption was 949.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 921]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L916] 0 static int top=0; VAL [top=0] [L917] 0 static unsigned int arr[(400)]; VAL [arr={6:0}, top=0] [L918] 0 pthread_mutex_t m; VAL [arr={6:0}, m={7:0}, top=0] [L919] 0 _Bool flag=(0); VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L1000] 0 pthread_t id1, id2; VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L1002] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L1003] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L985] 2 int i; VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L986] 2 i=0 VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L986] COND TRUE 2 i<(400) VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L969] 1 int i; VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L970] 1 unsigned int tmp; VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L971] 1 i=0 VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L971] COND TRUE 1 i<(400) VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L974] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L4] COND FALSE 1 !(!cond) VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L941] COND FALSE 1 !(top==(400)) VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L933] 1 return top; VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L948] 1 stack[get_top()] = x VAL [arr={6:0}, flag=0, m={7:0}, top=0] [L925] 1 top++ VAL [arr={6:0}, flag=0, m={7:0}, top=1] [L951] 1 return 0; VAL [arr={6:0}, flag=0, m={7:0}, top=1] [L976] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arr={6:0}, flag=0, m={7:0}, top=1] [L978] 1 flag=(1) VAL [arr={6:0}, flag=1, m={7:0}, top=1] [L989] COND TRUE 2 \read(flag) VAL [arr={6:0}, flag=1, m={7:0}, top=1] [L933] 2 return top; VAL [arr={6:0}, flag=1, m={7:0}, top=1] [L955] COND FALSE 2 !(get_top()==0) VAL [arr={6:0}, flag=1, m={7:0}, top=1] [L929] 2 top-- VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L933] 2 return top; VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L963] EXPR 2 stack[get_top()] VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L963] 2 return stack[get_top()]; VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L991] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L986] 2 i++ VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L986] COND TRUE 2 i<(400) VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L989] COND TRUE 2 \read(flag) VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L933] 2 return top; VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L955] COND TRUE 2 get_top()==0 VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L958] 2 return (-2); VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L991] COND TRUE 2 !(pop(arr)!=(-2)) VAL [arr={6:0}, flag=1, m={7:0}, top=0] [L921] 2 __VERIFIER_error() VAL [arr={6:0}, flag=1, m={7:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 134 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 176.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 53.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 1819 SDtfs, 5919 SDslu, 15747 SDs, 0 SdLazy, 4335 SolverSat, 261 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1556 GetRequests, 1156 SyntacticMatches, 1 SemanticMatches, 399 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43078 ImplicationChecksByTransitivity, 119.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10774occurred 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: 2.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 27000 StatesRemovedByMinimization, 8 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 proved your program to be incorrect! Received shutdown request...