/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 13:12:14,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 13:12:14,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 13:12:14,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 13:12:14,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 13:12:14,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 13:12:14,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 13:12:14,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 13:12:14,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 13:12:14,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 13:12:14,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 13:12:14,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 13:12:14,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 13:12:14,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 13:12:14,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 13:12:14,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 13:12:14,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 13:12:14,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 13:12:14,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 13:12:14,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 13:12:14,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 13:12:14,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 13:12:14,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 13:12:14,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 13:12:14,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 13:12:14,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 13:12:14,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 13:12:14,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 13:12:14,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 13:12:14,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 13:12:14,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 13:12:14,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 13:12:14,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 13:12:14,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 13:12:14,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 13:12:14,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 13:12:14,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 13:12:14,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 13:12:14,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 13:12:14,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 13:12:14,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 13:12:14,170 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 13:12:14,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 13:12:14,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 13:12:14,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 13:12:14,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 13:12:14,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 13:12:14,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 13:12:14,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 13:12:14,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 13:12:14,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 13:12:14,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 13:12:14,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 13:12:14,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 13:12:14,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 13:12:14,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 13:12:14,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 13:12:14,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 13:12:14,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:12:14,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 13:12:14,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 13:12:14,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 13:12:14,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 13:12:14,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 13:12:14,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 13:12:14,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 13:12:14,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 13:12:14,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 13:12:14,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 13:12:14,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 13:12:14,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 13:12:14,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 13:12:14,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2020-10-11 13:12:14,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39838a7a/82b2aeff04594222927336926d407171/FLAG2fe43f6b3 [2020-10-11 13:12:15,130 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 13:12:15,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2020-10-11 13:12:15,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39838a7a/82b2aeff04594222927336926d407171/FLAG2fe43f6b3 [2020-10-11 13:12:15,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39838a7a/82b2aeff04594222927336926d407171 [2020-10-11 13:12:15,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 13:12:15,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 13:12:15,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 13:12:15,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 13:12:15,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 13:12:15,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:12:15" (1/1) ... [2020-10-11 13:12:15,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4d06a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:15, skipping insertion in model container [2020-10-11 13:12:15,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:12:15" (1/1) ... [2020-10-11 13:12:15,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 13:12:15,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 13:12:16,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:12:16,216 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 13:12:16,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:12:16,414 INFO L208 MainTranslator]: Completed translation [2020-10-11 13:12:16,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16 WrapperNode [2020-10-11 13:12:16,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 13:12:16,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 13:12:16,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 13:12:16,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 13:12:16,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 13:12:16,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 13:12:16,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 13:12:16,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 13:12:16,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (1/1) ... [2020-10-11 13:12:16,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 13:12:16,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 13:12:16,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 13:12:16,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 13:12:16,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (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 [2020-10-11 13:12:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-11 13:12:16,604 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-11 13:12:16,604 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-11 13:12:16,604 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-11 13:12:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 13:12:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 13:12:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 13:12:16,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 13:12:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 13:12:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 13:12:16,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 13:12:16,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 13:12:16,608 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 13:12:17,085 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 13:12:17,086 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-11 13:12:17,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:12:17 BoogieIcfgContainer [2020-10-11 13:12:17,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 13:12:17,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 13:12:17,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 13:12:17,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 13:12:17,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:12:15" (1/3) ... [2020-10-11 13:12:17,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16851942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:12:17, skipping insertion in model container [2020-10-11 13:12:17,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:12:16" (2/3) ... [2020-10-11 13:12:17,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16851942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:12:17, skipping insertion in model container [2020-10-11 13:12:17,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:12:17" (3/3) ... [2020-10-11 13:12:17,102 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-1.i [2020-10-11 13:12:17,114 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 13:12:17,115 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 13:12:17,126 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 13:12:17,127 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 13:12:17,189 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,190 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,190 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,191 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,192 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,192 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,193 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,193 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,194 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,194 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,194 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,194 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,194 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,195 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,195 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,195 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,195 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,196 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,196 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,197 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,197 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,198 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,200 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,200 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,200 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,201 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,201 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,201 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,201 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,201 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,202 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,202 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,203 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,203 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,203 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,204 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,204 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,204 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,205 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,205 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,205 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,205 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,206 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,207 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,207 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,208 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,208 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,208 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,208 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,208 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,210 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,211 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,211 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,211 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,211 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,212 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,212 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,212 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,212 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,213 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,213 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,216 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,216 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,216 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,216 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,217 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,217 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,217 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,217 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,218 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,218 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,218 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,219 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,220 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,220 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,221 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,221 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,221 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,221 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,222 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,222 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,223 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,223 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,223 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,224 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,224 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,225 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,225 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,225 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,225 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,226 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,226 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,228 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,228 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,228 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,229 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,233 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,233 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,233 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,234 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,242 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,242 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,242 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,243 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,243 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,244 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,244 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,245 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,245 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,245 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,245 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,245 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,246 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,246 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,247 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,247 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,257 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,257 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,257 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,257 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,258 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,258 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,258 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,258 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,259 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,259 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,259 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,259 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,259 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,260 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,260 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,260 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,260 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,261 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,261 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,261 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,261 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,262 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,262 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,276 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,276 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,276 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,276 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,276 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,277 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,277 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,277 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,277 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,277 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,277 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,278 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,278 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,278 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,278 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,278 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,278 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,279 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:12:17,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 13:12:17,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:12:17,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:12:17,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:12:17,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:12:17,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:12:17,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:12:17,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:12:17,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:12:17,347 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:12:17,350 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-11 13:12:17,353 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 142 transitions, 306 flow [2020-10-11 13:12:17,355 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 142 transitions, 306 flow [2020-10-11 13:12:17,429 INFO L129 PetriNetUnfolder]: 11/142 cut-off events. [2020-10-11 13:12:17,429 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 13:12:17,440 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 142 events. 11/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2020-10-11 13:12:17,452 INFO L117 LiptonReduction]: Number of co-enabled transitions 5744 [2020-10-11 13:12:20,108 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-11 13:12:20,225 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-11 13:12:20,843 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-10-11 13:12:21,087 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-11 13:12:21,151 INFO L132 LiptonReduction]: Checked pairs total: 10078 [2020-10-11 13:12:21,151 INFO L134 LiptonReduction]: Total number of compositions: 129 [2020-10-11 13:12:21,159 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-10-11 13:12:21,188 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 331 states. [2020-10-11 13:12:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-11 13:12:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-11 13:12:21,204 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:21,205 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-11 13:12:21,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:21,213 INFO L82 PathProgramCache]: Analyzing trace with hash 89961792, now seen corresponding path program 1 times [2020-10-11 13:12:21,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:21,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887782080] [2020-10-11 13:12:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:21,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887782080] [2020-10-11 13:12:21,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:12:21,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:12:21,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915874371] [2020-10-11 13:12:21,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:12:21,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:21,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:12:21,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:21,581 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-10-11 13:12:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:21,658 INFO L93 Difference]: Finished difference Result 504 states and 1247 transitions. [2020-10-11 13:12:21,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:12:21,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-11 13:12:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:21,680 INFO L225 Difference]: With dead ends: 504 [2020-10-11 13:12:21,680 INFO L226 Difference]: Without dead ends: 460 [2020-10-11 13:12:21,682 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:21,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-11 13:12:21,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 420. [2020-10-11 13:12:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-11 13:12:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1095 transitions. [2020-10-11 13:12:21,767 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1095 transitions. Word has length 6 [2020-10-11 13:12:21,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:21,768 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 1095 transitions. [2020-10-11 13:12:21,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:12:21,768 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1095 transitions. [2020-10-11 13:12:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 13:12:21,769 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:21,769 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:12:21,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 13:12:21,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:21,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1286121651, now seen corresponding path program 1 times [2020-10-11 13:12:21,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:21,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014618470] [2020-10-11 13:12:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:21,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014618470] [2020-10-11 13:12:21,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:12:21,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:12:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165364260] [2020-10-11 13:12:21,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:12:21,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:12:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:21,829 INFO L87 Difference]: Start difference. First operand 420 states and 1095 transitions. Second operand 3 states. [2020-10-11 13:12:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:21,848 INFO L93 Difference]: Finished difference Result 464 states and 1205 transitions. [2020-10-11 13:12:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:12:21,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-11 13:12:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:21,853 INFO L225 Difference]: With dead ends: 464 [2020-10-11 13:12:21,853 INFO L226 Difference]: Without dead ends: 464 [2020-10-11 13:12:21,854 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-11 13:12:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-11 13:12:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-11 13:12:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1205 transitions. [2020-10-11 13:12:21,883 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1205 transitions. Word has length 10 [2020-10-11 13:12:21,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:21,883 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 1205 transitions. [2020-10-11 13:12:21,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:12:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1205 transitions. [2020-10-11 13:12:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:12:21,885 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:21,885 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:12:21,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 13:12:21,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash 554739665, now seen corresponding path program 1 times [2020-10-11 13:12:21,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:21,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469044708] [2020-10-11 13:12:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:21,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469044708] [2020-10-11 13:12:21,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548697818] [2020-10-11 13:12:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:22,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 13:12:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:12:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:22,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:12:22,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-11 13:12:22,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038576821] [2020-10-11 13:12:22,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 13:12:22,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 13:12:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-11 13:12:22,112 INFO L87 Difference]: Start difference. First operand 464 states and 1205 transitions. Second operand 7 states. [2020-10-11 13:12:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:22,266 INFO L93 Difference]: Finished difference Result 866 states and 2152 transitions. [2020-10-11 13:12:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 13:12:22,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-11 13:12:22,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:22,282 INFO L225 Difference]: With dead ends: 866 [2020-10-11 13:12:22,282 INFO L226 Difference]: Without dead ends: 851 [2020-10-11 13:12:22,283 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-11 13:12:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-10-11 13:12:22,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 575. [2020-10-11 13:12:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-11 13:12:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1484 transitions. [2020-10-11 13:12:22,318 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1484 transitions. Word has length 13 [2020-10-11 13:12:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:22,319 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1484 transitions. [2020-10-11 13:12:22,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 13:12:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1484 transitions. [2020-10-11 13:12:22,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 13:12:22,327 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:22,327 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:12:22,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-11 13:12:22,540 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:22,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1825595924, now seen corresponding path program 1 times [2020-10-11 13:12:22,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:22,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483661306] [2020-10-11 13:12:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:22,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483661306] [2020-10-11 13:12:22,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:12:22,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:12:22,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112367097] [2020-10-11 13:12:22,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:12:22,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:22,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:12:22,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:22,650 INFO L87 Difference]: Start difference. First operand 575 states and 1484 transitions. Second operand 3 states. [2020-10-11 13:12:22,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:22,680 INFO L93 Difference]: Finished difference Result 304 states and 670 transitions. [2020-10-11 13:12:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:12:22,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-11 13:12:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:22,684 INFO L225 Difference]: With dead ends: 304 [2020-10-11 13:12:22,684 INFO L226 Difference]: Without dead ends: 304 [2020-10-11 13:12:22,684 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-11 13:12:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 294. [2020-10-11 13:12:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-11 13:12:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 643 transitions. [2020-10-11 13:12:22,694 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 643 transitions. Word has length 16 [2020-10-11 13:12:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:22,695 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 643 transitions. [2020-10-11 13:12:22,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:12:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 643 transitions. [2020-10-11 13:12:22,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 13:12:22,697 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:22,697 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:12:22,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 13:12:22,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:22,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1573705314, now seen corresponding path program 1 times [2020-10-11 13:12:22,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:22,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944123073] [2020-10-11 13:12:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:22,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944123073] [2020-10-11 13:12:22,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:12:22,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:12:22,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32444685] [2020-10-11 13:12:22,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:12:22,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:22,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:12:22,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:22,740 INFO L87 Difference]: Start difference. First operand 294 states and 643 transitions. Second operand 3 states. [2020-10-11 13:12:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:22,805 INFO L93 Difference]: Finished difference Result 372 states and 811 transitions. [2020-10-11 13:12:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:12:22,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 13:12:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:22,808 INFO L225 Difference]: With dead ends: 372 [2020-10-11 13:12:22,808 INFO L226 Difference]: Without dead ends: 372 [2020-10-11 13:12:22,808 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:12:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-11 13:12:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 295. [2020-10-11 13:12:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-11 13:12:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 647 transitions. [2020-10-11 13:12:22,817 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 647 transitions. Word has length 17 [2020-10-11 13:12:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:22,819 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 647 transitions. [2020-10-11 13:12:22,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:12:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 647 transitions. [2020-10-11 13:12:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 13:12:22,820 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:22,820 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-11 13:12:22,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 13:12:22,820 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1192042464, now seen corresponding path program 2 times [2020-10-11 13:12:22,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:22,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912296914] [2020-10-11 13:12:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:22,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912296914] [2020-10-11 13:12:22,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693642201] [2020-10-11 13:12:22,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-11 13:12:23,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 13:12:23,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:12:23,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 13:12:23,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:12:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:23,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:12:23,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-11 13:12:23,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864640975] [2020-10-11 13:12:23,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 13:12:23,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:23,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 13:12:23,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-11 13:12:23,051 INFO L87 Difference]: Start difference. First operand 295 states and 647 transitions. Second operand 9 states. [2020-10-11 13:12:23,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:23,154 INFO L93 Difference]: Finished difference Result 542 states and 1156 transitions. [2020-10-11 13:12:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 13:12:23,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-11 13:12:23,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:23,158 INFO L225 Difference]: With dead ends: 542 [2020-10-11 13:12:23,158 INFO L226 Difference]: Without dead ends: 542 [2020-10-11 13:12:23,159 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-11 13:12:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-11 13:12:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 372. [2020-10-11 13:12:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-11 13:12:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 816 transitions. [2020-10-11 13:12:23,181 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 816 transitions. Word has length 20 [2020-10-11 13:12:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:23,182 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 816 transitions. [2020-10-11 13:12:23,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 13:12:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 816 transitions. [2020-10-11 13:12:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 13:12:23,183 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:23,183 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:12:23,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:23,398 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:23,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:23,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1105063959, now seen corresponding path program 1 times [2020-10-11 13:12:23,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:23,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660015485] [2020-10-11 13:12:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:23,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660015485] [2020-10-11 13:12:23,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:12:23,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-11 13:12:23,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973073967] [2020-10-11 13:12:23,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 13:12:23,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:23,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 13:12:23,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-11 13:12:23,787 INFO L87 Difference]: Start difference. First operand 372 states and 816 transitions. Second operand 14 states. [2020-10-11 13:12:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:25,022 INFO L93 Difference]: Finished difference Result 703 states and 1483 transitions. [2020-10-11 13:12:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 13:12:25,022 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-10-11 13:12:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:25,026 INFO L225 Difference]: With dead ends: 703 [2020-10-11 13:12:25,026 INFO L226 Difference]: Without dead ends: 631 [2020-10-11 13:12:25,027 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-10-11 13:12:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-11 13:12:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 422. [2020-10-11 13:12:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-11 13:12:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 927 transitions. [2020-10-11 13:12:25,039 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 927 transitions. Word has length 21 [2020-10-11 13:12:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:25,040 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 927 transitions. [2020-10-11 13:12:25,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 13:12:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 927 transitions. [2020-10-11 13:12:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 13:12:25,041 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:25,041 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2020-10-11 13:12:25,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 13:12:25,042 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash 790528241, now seen corresponding path program 3 times [2020-10-11 13:12:25,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:25,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092113525] [2020-10-11 13:12:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:25,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092113525] [2020-10-11 13:12:25,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136982669] [2020-10-11 13:12:25,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:25,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 13:12:25,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:12:25,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 13:12:25,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:12:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:25,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:12:25,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-10-11 13:12:25,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086635357] [2020-10-11 13:12:25,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 13:12:25,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:25,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 13:12:25,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-11 13:12:25,277 INFO L87 Difference]: Start difference. First operand 422 states and 927 transitions. Second operand 11 states. [2020-10-11 13:12:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:25,394 INFO L93 Difference]: Finished difference Result 759 states and 1604 transitions. [2020-10-11 13:12:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 13:12:25,395 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 13:12:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:25,399 INFO L225 Difference]: With dead ends: 759 [2020-10-11 13:12:25,399 INFO L226 Difference]: Without dead ends: 759 [2020-10-11 13:12:25,400 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-11 13:12:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-10-11 13:12:25,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 499. [2020-10-11 13:12:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-11 13:12:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 1096 transitions. [2020-10-11 13:12:25,414 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 1096 transitions. Word has length 27 [2020-10-11 13:12:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:25,414 INFO L481 AbstractCegarLoop]: Abstraction has 499 states and 1096 transitions. [2020-10-11 13:12:25,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 13:12:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 1096 transitions. [2020-10-11 13:12:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-11 13:12:25,416 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:25,416 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:12:25,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:25,633 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:25,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:25,634 INFO L82 PathProgramCache]: Analyzing trace with hash -859233366, now seen corresponding path program 2 times [2020-10-11 13:12:25,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:25,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288632321] [2020-10-11 13:12:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:26,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288632321] [2020-10-11 13:12:26,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093051264] [2020-10-11 13:12:26,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:26,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-11 13:12:26,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:12:26,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-11 13:12:26,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:12:26,290 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-11 13:12:26,291 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:12:26,316 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-11 13:12:26,320 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:12:26,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-11 13:12:26,726 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 13:12:26,790 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-11 13:12:26,900 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:27,221 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:27,795 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:33,969 INFO L545 ElimStorePlain]: Start of recursive call 2: 18 dim-0 vars, End of recursive call: 18 dim-0 vars, and 1 xjuncts. [2020-10-11 13:12:33,982 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-11 13:12:34,108 INFO L545 ElimStorePlain]: Start of recursive call 3: 6 dim-0 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-10-11 13:12:35,175 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 202 DAG size of output: 120 [2020-10-11 13:12:35,176 INFO L625 ElimStorePlain]: treesize reduction 263, result has 59.3 percent of original size [2020-10-11 13:12:37,236 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 18 dim-0 vars, and 1 xjuncts. [2020-10-11 13:12:37,236 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:383 [2020-10-11 13:12:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 13:12:39,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 13:12:39,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 26 [2020-10-11 13:12:39,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732812833] [2020-10-11 13:12:39,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 13:12:39,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 13:12:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-11 13:12:39,088 INFO L87 Difference]: Start difference. First operand 499 states and 1096 transitions. Second operand 13 states. [2020-10-11 13:12:41,599 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-11 13:12:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:42,603 INFO L93 Difference]: Finished difference Result 850 states and 1830 transitions. [2020-10-11 13:12:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-11 13:12:42,604 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-11 13:12:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:42,609 INFO L225 Difference]: With dead ends: 850 [2020-10-11 13:12:42,610 INFO L226 Difference]: Without dead ends: 850 [2020-10-11 13:12:42,611 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=247, Invalid=1915, Unknown=0, NotChecked=0, Total=2162 [2020-10-11 13:12:42,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-11 13:12:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 563. [2020-10-11 13:12:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-11 13:12:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1242 transitions. [2020-10-11 13:12:42,630 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1242 transitions. Word has length 28 [2020-10-11 13:12:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:42,631 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 1242 transitions. [2020-10-11 13:12:42,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 13:12:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1242 transitions. [2020-10-11 13:12:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-11 13:12:42,633 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:42,633 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:12:42,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:42,848 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash 585117152, now seen corresponding path program 1 times [2020-10-11 13:12:42,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:42,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036728218] [2020-10-11 13:12:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:12:42,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036728218] [2020-10-11 13:12:42,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135086792] [2020-10-11 13:12:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:43,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 13:12:43,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:12:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:12:43,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:12:43,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-11 13:12:43,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068490140] [2020-10-11 13:12:43,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 13:12:43,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:43,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 13:12:43,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-11 13:12:43,078 INFO L87 Difference]: Start difference. First operand 563 states and 1242 transitions. Second operand 10 states. [2020-10-11 13:12:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:43,213 INFO L93 Difference]: Finished difference Result 912 states and 1935 transitions. [2020-10-11 13:12:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 13:12:43,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-11 13:12:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:43,219 INFO L225 Difference]: With dead ends: 912 [2020-10-11 13:12:43,220 INFO L226 Difference]: Without dead ends: 912 [2020-10-11 13:12:43,220 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-11 13:12:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-11 13:12:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 607. [2020-10-11 13:12:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-11 13:12:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1366 transitions. [2020-10-11 13:12:43,237 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1366 transitions. Word has length 31 [2020-10-11 13:12:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:43,237 INFO L481 AbstractCegarLoop]: Abstraction has 607 states and 1366 transitions. [2020-10-11 13:12:43,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 13:12:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1366 transitions. [2020-10-11 13:12:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-11 13:12:43,240 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:43,240 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2020-10-11 13:12:43,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-11 13:12:43,456 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash 225739520, now seen corresponding path program 4 times [2020-10-11 13:12:43,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:43,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149598258] [2020-10-11 13:12:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:43,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149598258] [2020-10-11 13:12:43,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779843490] [2020-10-11 13:12:43,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:43,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 13:12:43,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:12:43,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 13:12:43,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:12:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:43,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:12:43,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-11 13:12:43,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034512916] [2020-10-11 13:12:43,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 13:12:43,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:12:43,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 13:12:43,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-11 13:12:43,674 INFO L87 Difference]: Start difference. First operand 607 states and 1366 transitions. Second operand 13 states. [2020-10-11 13:12:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:12:43,834 INFO L93 Difference]: Finished difference Result 984 states and 2121 transitions. [2020-10-11 13:12:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 13:12:43,834 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-11 13:12:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:12:43,840 INFO L225 Difference]: With dead ends: 984 [2020-10-11 13:12:43,840 INFO L226 Difference]: Without dead ends: 984 [2020-10-11 13:12:43,842 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-11 13:12:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-10-11 13:12:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 684. [2020-10-11 13:12:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-10-11 13:12:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1535 transitions. [2020-10-11 13:12:43,862 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1535 transitions. Word has length 34 [2020-10-11 13:12:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:12:43,862 INFO L481 AbstractCegarLoop]: Abstraction has 684 states and 1535 transitions. [2020-10-11 13:12:43,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 13:12:43,863 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1535 transitions. [2020-10-11 13:12:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-11 13:12:43,865 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:12:43,866 INFO L421 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] [2020-10-11 13:12:44,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:44,082 INFO L429 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:12:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:12:44,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1848776679, now seen corresponding path program 1 times [2020-10-11 13:12:44,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:12:44,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728165169] [2020-10-11 13:12:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:12:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:12:44,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728165169] [2020-10-11 13:12:44,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894315535] [2020-10-11 13:12:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:12:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:12:44,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-11 13:12:44,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:12:44,947 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-11 13:12:44,948 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:12:44,973 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-11 13:12:44,974 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:12:44,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-11 13:12:45,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:12:45,330 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:12:45,331 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:12:45,350 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:12:45,351 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:12:45,352 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:12:45,793 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 13:12:45,820 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-11 13:12:45,835 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-11 13:12:45,841 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-11 13:12:45,891 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:46,067 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:46,373 INFO L721 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:46,702 INFO L721 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:47,245 INFO L721 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:12:47,886 INFO L721 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:16:44,943 INFO L545 ElimStorePlain]: Start of recursive call 3: 40 dim-0 vars, End of recursive call: 40 dim-0 vars, and 1 xjuncts. [2020-10-11 13:16:52,742 WARN L193 SmtUtils]: Spent 7.80 s on a formula simplification. DAG size of input: 294 DAG size of output: 235 [2020-10-11 13:16:52,743 INFO L625 ElimStorePlain]: treesize reduction 276, result has 75.9 percent of original size [2020-10-11 13:16:56,782 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 35 dim-0 vars, and 1 xjuncts. [2020-10-11 13:16:56,782 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:759 [2020-10-11 13:17:01,197 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-11 13:17:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:17:01,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:17:01,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2020-10-11 13:17:01,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90820333] [2020-10-11 13:17:01,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-11 13:17:01,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:17:01,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-11 13:17:01,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-11 13:17:01,220 INFO L87 Difference]: Start difference. First operand 684 states and 1535 transitions. Second operand 37 states. [2020-10-11 13:17:02,668 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-11 13:17:03,048 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-11 13:17:03,482 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-11 13:17:03,736 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-11 13:17:04,067 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-11 13:17:04,295 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-11 13:17:05,040 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-11 13:17:06,865 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 252 [2020-10-11 13:17:07,133 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-11 13:17:07,626 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-11 13:17:08,461 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-11 13:17:08,879 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-11 13:17:09,396 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-11 13:17:09,939 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-11 13:17:10,479 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-11 13:17:11,329 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-11 13:17:13,115 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 283 DAG size of output: 277 [2020-10-11 13:17:13,463 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-11 13:17:14,088 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-11 13:17:14,596 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-11 13:17:15,189 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-11 13:17:15,763 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 13:17:16,293 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-11 13:17:16,726 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-11 13:17:17,209 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-11 13:17:17,734 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-11 13:17:18,239 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-11 13:17:18,686 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-11 13:17:19,066 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-11 13:17:19,525 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-11 13:17:20,086 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-11 13:17:20,438 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-11 13:17:22,503 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 271 DAG size of output: 269 [2020-10-11 13:17:22,961 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-11 13:17:23,171 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-11 13:17:23,865 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-11 13:17:24,151 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-11 13:17:24,457 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-11 13:17:25,090 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-11 13:17:25,445 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-11 13:17:25,890 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-11 13:17:26,759 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-11 13:17:27,478 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-11 13:17:29,174 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2020-10-11 13:17:30,141 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-11 13:17:30,359 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-11 13:17:30,772 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-11 13:17:31,208 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-11 13:17:31,868 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-11 13:17:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:17:32,114 INFO L93 Difference]: Finished difference Result 2296 states and 4900 transitions. [2020-10-11 13:17:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-11 13:17:32,115 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2020-10-11 13:17:32,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:17:32,125 INFO L225 Difference]: With dead ends: 2296 [2020-10-11 13:17:32,126 INFO L226 Difference]: Without dead ends: 2144 [2020-10-11 13:17:32,129 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3673 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=1352, Invalid=10420, Unknown=0, NotChecked=0, Total=11772 [2020-10-11 13:17:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2020-10-11 13:17:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 850. [2020-10-11 13:17:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-11 13:17:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1934 transitions. [2020-10-11 13:17:32,159 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1934 transitions. Word has length 36 [2020-10-11 13:17:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:17:32,159 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1934 transitions. [2020-10-11 13:17:32,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-11 13:17:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1934 transitions. [2020-10-11 13:17:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-11 13:17:32,161 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:17:32,161 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:17:32,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:32,375 INFO L429 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:17:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:17:32,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1392133555, now seen corresponding path program 2 times [2020-10-11 13:17:32,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:17:32,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012170816] [2020-10-11 13:17:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:17:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:17:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:17:32,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012170816] [2020-10-11 13:17:32,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252025037] [2020-10-11 13:17:32,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:32,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 13:17:32,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:17:32,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 13:17:32,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:17:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:17:32,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:17:32,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-11 13:17:32,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707474774] [2020-10-11 13:17:32,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 13:17:32,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:17:32,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 13:17:32,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 13:17:32,666 INFO L87 Difference]: Start difference. First operand 850 states and 1934 transitions. Second operand 12 states. [2020-10-11 13:17:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:17:32,878 INFO L93 Difference]: Finished difference Result 1531 states and 3311 transitions. [2020-10-11 13:17:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 13:17:32,879 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-11 13:17:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:17:32,888 INFO L225 Difference]: With dead ends: 1531 [2020-10-11 13:17:32,888 INFO L226 Difference]: Without dead ends: 1531 [2020-10-11 13:17:32,888 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-11 13:17:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-10-11 13:17:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 850. [2020-10-11 13:17:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-10-11 13:17:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1934 transitions. [2020-10-11 13:17:32,922 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1934 transitions. Word has length 38 [2020-10-11 13:17:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:17:32,923 INFO L481 AbstractCegarLoop]: Abstraction has 850 states and 1934 transitions. [2020-10-11 13:17:32,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 13:17:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1934 transitions. [2020-10-11 13:17:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-11 13:17:32,926 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:17:32,926 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2020-10-11 13:17:33,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-11 13:17:33,140 INFO L429 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:17:33,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:17:33,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1525277201, now seen corresponding path program 5 times [2020-10-11 13:17:33,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:17:33,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575997926] [2020-10-11 13:17:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:17:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:17:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:17:33,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575997926] [2020-10-11 13:17:33,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532769494] [2020-10-11 13:17:33,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:33,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-11 13:17:33,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:17:33,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 13:17:33,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:17:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:17:33,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 13:17:33,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-10-11 13:17:33,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871374997] [2020-10-11 13:17:33,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 13:17:33,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:17:33,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 13:17:33,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-11 13:17:33,409 INFO L87 Difference]: Start difference. First operand 850 states and 1934 transitions. Second operand 8 states. [2020-10-11 13:17:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:17:33,480 INFO L93 Difference]: Finished difference Result 1901 states and 4130 transitions. [2020-10-11 13:17:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 13:17:33,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-11 13:17:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:17:33,489 INFO L225 Difference]: With dead ends: 1901 [2020-10-11 13:17:33,489 INFO L226 Difference]: Without dead ends: 1151 [2020-10-11 13:17:33,490 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-11 13:17:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-11 13:17:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 919. [2020-10-11 13:17:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-10-11 13:17:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1913 transitions. [2020-10-11 13:17:33,516 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1913 transitions. Word has length 41 [2020-10-11 13:17:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:17:33,516 INFO L481 AbstractCegarLoop]: Abstraction has 919 states and 1913 transitions. [2020-10-11 13:17:33,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 13:17:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1913 transitions. [2020-10-11 13:17:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-11 13:17:33,519 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:17:33,519 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:17:33,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:33,733 INFO L429 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:17:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:17:33,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1282653762, now seen corresponding path program 3 times [2020-10-11 13:17:33,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:17:33,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942796236] [2020-10-11 13:17:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:17:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:17:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 13:17:33,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942796236] [2020-10-11 13:17:33,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894728863] [2020-10-11 13:17:33,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:34,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-11 13:17:34,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:17:34,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 13:17:34,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:17:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:17:34,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:17:34,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2020-10-11 13:17:34,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29472527] [2020-10-11 13:17:34,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 13:17:34,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:17:34,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 13:17:34,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 13:17:34,056 INFO L87 Difference]: Start difference. First operand 919 states and 1913 transitions. Second operand 12 states. [2020-10-11 13:17:34,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:17:34,266 INFO L93 Difference]: Finished difference Result 1454 states and 2944 transitions. [2020-10-11 13:17:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 13:17:34,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-11 13:17:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:17:34,272 INFO L225 Difference]: With dead ends: 1454 [2020-10-11 13:17:34,273 INFO L226 Difference]: Without dead ends: 1127 [2020-10-11 13:17:34,273 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-11 13:17:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-11 13:17:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 882. [2020-10-11 13:17:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-11 13:17:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1819 transitions. [2020-10-11 13:17:34,312 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1819 transitions. Word has length 45 [2020-10-11 13:17:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:17:34,312 INFO L481 AbstractCegarLoop]: Abstraction has 882 states and 1819 transitions. [2020-10-11 13:17:34,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 13:17:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1819 transitions. [2020-10-11 13:17:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-11 13:17:34,314 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:17:34,314 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:17:34,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-11 13:17:34,528 INFO L429 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:17:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:17:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2015805632, now seen corresponding path program 4 times [2020-10-11 13:17:34,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:17:34,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547982039] [2020-10-11 13:17:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:17:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:17:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:17:34,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547982039] [2020-10-11 13:17:34,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130207847] [2020-10-11 13:17:34,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:34,745 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 13:17:34,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:17:34,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 13:17:34,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:17:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:17:34,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:17:34,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-11 13:17:34,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571763624] [2020-10-11 13:17:34,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 13:17:34,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:17:34,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 13:17:34,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-11 13:17:34,781 INFO L87 Difference]: Start difference. First operand 882 states and 1819 transitions. Second operand 12 states. [2020-10-11 13:17:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:17:34,964 INFO L93 Difference]: Finished difference Result 1257 states and 2501 transitions. [2020-10-11 13:17:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 13:17:34,965 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-11 13:17:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:17:34,970 INFO L225 Difference]: With dead ends: 1257 [2020-10-11 13:17:34,970 INFO L226 Difference]: Without dead ends: 1177 [2020-10-11 13:17:34,971 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-11 13:17:34,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2020-10-11 13:17:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 778. [2020-10-11 13:17:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-11 13:17:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1596 transitions. [2020-10-11 13:17:34,989 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1596 transitions. Word has length 45 [2020-10-11 13:17:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:17:34,990 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1596 transitions. [2020-10-11 13:17:34,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 13:17:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1596 transitions. [2020-10-11 13:17:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-11 13:17:34,992 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:17:34,992 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:17:35,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-11 13:17:35,208 INFO L429 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:17:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:17:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1958720896, now seen corresponding path program 5 times [2020-10-11 13:17:35,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:17:35,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735949071] [2020-10-11 13:17:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:17:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:17:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:17:35,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735949071] [2020-10-11 13:17:35,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792715180] [2020-10-11 13:17:35,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:35,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-11 13:17:35,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:17:35,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 13:17:35,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:17:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:17:35,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:17:35,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-11 13:17:35,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438892818] [2020-10-11 13:17:35,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 13:17:35,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:17:35,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 13:17:35,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-11 13:17:35,546 INFO L87 Difference]: Start difference. First operand 778 states and 1596 transitions. Second operand 14 states. [2020-10-11 13:17:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:17:35,815 INFO L93 Difference]: Finished difference Result 1374 states and 2723 transitions. [2020-10-11 13:17:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 13:17:35,816 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-10-11 13:17:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:17:35,823 INFO L225 Difference]: With dead ends: 1374 [2020-10-11 13:17:35,823 INFO L226 Difference]: Without dead ends: 1364 [2020-10-11 13:17:35,824 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-11 13:17:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-10-11 13:17:35,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 778. [2020-10-11 13:17:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-11 13:17:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1596 transitions. [2020-10-11 13:17:35,859 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1596 transitions. Word has length 45 [2020-10-11 13:17:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:17:35,860 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1596 transitions. [2020-10-11 13:17:35,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 13:17:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1596 transitions. [2020-10-11 13:17:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-11 13:17:35,862 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:17:35,862 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:17:36,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-11 13:17:36,076 INFO L429 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:17:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:17:36,076 INFO L82 PathProgramCache]: Analyzing trace with hash 579552405, now seen corresponding path program 2 times [2020-10-11 13:17:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:17:36,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410888488] [2020-10-11 13:17:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:17:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:17:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:17:37,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410888488] [2020-10-11 13:17:37,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146798638] [2020-10-11 13:17:37,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:17:37,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 13:17:37,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:17:37,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 75 conjunts are in the unsatisfiable core [2020-10-11 13:17:37,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:17:37,686 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-11 13:17:37,686 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:17:37,719 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-11 13:17:37,720 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:17:37,720 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-11 13:17:38,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:17:38,339 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:17:38,340 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:17:38,365 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:17:38,366 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:17:38,367 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:17:38,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:17:38,929 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:17:38,930 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:17:38,953 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:17:38,955 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:17:38,955 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:17:39,879 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-11 13:17:39,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 13:17:39,881 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 13:17:39,886 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 13:17:39,901 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-11 13:17:40,050 INFO L545 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-11 13:17:40,067 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-11 13:17:40,134 INFO L545 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-11 13:17:40,253 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 29 [2020-10-11 13:17:40,254 INFO L625 ElimStorePlain]: treesize reduction 467, result has 10.9 percent of original size [2020-10-11 13:17:40,261 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-11 13:17:40,261 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:57 [2020-10-11 13:17:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:17:40,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:17:40,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2020-10-11 13:17:40,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784345571] [2020-10-11 13:17:40,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-11 13:17:40,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:17:40,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-11 13:17:40,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2020-10-11 13:17:40,410 INFO L87 Difference]: Start difference. First operand 778 states and 1596 transitions. Second operand 49 states. [2020-10-11 13:17:41,555 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-11 13:17:42,215 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-10-11 13:17:42,679 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-10-11 13:17:43,225 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-11 13:17:43,548 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-11 13:17:44,163 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-11 13:17:44,441 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-11 13:17:45,117 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-11 13:17:45,402 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-11 13:17:45,764 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 13:17:46,209 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-11 13:17:46,917 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-11 13:17:47,928 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-11 13:17:48,474 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-11 13:17:49,171 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-11 13:17:49,867 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-11 13:17:50,653 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-11 13:17:51,073 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-11 13:17:51,257 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-11 13:17:51,866 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-11 13:17:52,567 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-10-11 13:17:53,088 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-11 13:17:53,891 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-11 13:17:54,163 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-11 13:17:54,529 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-11 13:17:55,925 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-10-11 13:17:56,754 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-11 13:17:57,548 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-11 13:17:58,026 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-11 13:17:58,555 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-11 13:17:59,201 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-11 13:18:00,058 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-11 13:18:00,818 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-11 13:18:01,402 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-11 13:18:02,285 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-11 13:18:02,753 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-11 13:18:03,358 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-11 13:18:04,087 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-11 13:18:04,939 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-11 13:18:06,011 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-11 13:18:06,645 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-11 13:18:07,573 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-11 13:18:08,066 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-11 13:18:08,586 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-11 13:18:09,665 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-10-11 13:18:10,572 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-11 13:18:11,401 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-11 13:18:12,199 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-11 13:18:13,101 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-11 13:18:14,149 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-11 13:18:15,150 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-11 13:18:16,150 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-11 13:18:16,912 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 13:18:18,067 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-11 13:18:19,273 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-11 13:18:19,959 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 13:18:20,792 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-11 13:18:21,477 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-11 13:18:21,948 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-11 13:18:23,015 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-11 13:18:23,578 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 13:18:24,231 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-11 13:18:25,379 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-11 13:18:26,197 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-11 13:18:27,046 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-11 13:18:28,957 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-10-11 13:18:29,384 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-11 13:18:30,654 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-11 13:18:31,384 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-11 13:18:31,935 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-11 13:18:32,350 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-11 13:18:32,893 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-11 13:18:33,370 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-11 13:18:34,005 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-11 13:18:34,710 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-11 13:18:35,910 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-11 13:18:36,221 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-11 13:18:36,729 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-11 13:18:38,020 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-11 13:18:38,443 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-11 13:18:38,825 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-11 13:18:39,314 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-11 13:18:39,648 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-11 13:18:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:18:39,678 INFO L93 Difference]: Finished difference Result 1670 states and 3308 transitions. [2020-10-11 13:18:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-11 13:18:39,679 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 51 [2020-10-11 13:18:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:18:39,683 INFO L225 Difference]: With dead ends: 1670 [2020-10-11 13:18:39,684 INFO L226 Difference]: Without dead ends: 874 [2020-10-11 13:18:39,688 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6719 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=2070, Invalid=19100, Unknown=0, NotChecked=0, Total=21170 [2020-10-11 13:18:39,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-10-11 13:18:39,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 644. [2020-10-11 13:18:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-10-11 13:18:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1286 transitions. [2020-10-11 13:18:39,707 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1286 transitions. Word has length 51 [2020-10-11 13:18:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:18:39,708 INFO L481 AbstractCegarLoop]: Abstraction has 644 states and 1286 transitions. [2020-10-11 13:18:39,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-11 13:18:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1286 transitions. [2020-10-11 13:18:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-11 13:18:39,709 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:18:39,710 INFO L421 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:18:39,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-11 13:18:39,911 INFO L429 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:18:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:18:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1304222551, now seen corresponding path program 3 times [2020-10-11 13:18:39,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:18:39,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41501162] [2020-10-11 13:18:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:18:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:18:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:18:42,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41501162] [2020-10-11 13:18:42,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413341399] [2020-10-11 13:18:42,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:18:42,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-11 13:18:42,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:18:42,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 94 conjunts are in the unsatisfiable core [2020-10-11 13:18:42,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:18:43,106 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-11 13:18:43,106 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:18:43,157 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-11 13:18:43,158 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:18:43,158 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-11 13:18:44,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:18:44,203 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:18:44,204 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:18:44,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:18:44,252 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:18:44,252 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:18:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:18:45,206 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:18:45,207 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:18:45,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:18:45,250 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:18:45,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:18:46,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:18:46,263 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:18:46,264 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:18:46,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:18:46,312 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:18:46,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:18:48,251 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 13:18:48,271 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-11 13:18:48,281 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-11 13:18:48,290 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-11 13:18:48,307 INFO L545 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-11 13:18:48,450 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-10-11 13:18:48,451 INFO L625 ElimStorePlain]: treesize reduction 100, result has 42.9 percent of original size [2020-10-11 13:18:48,457 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-11 13:18:48,457 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:75 [2020-10-11 13:18:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:18:48,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:18:48,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60 [2020-10-11 13:18:48,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445310506] [2020-10-11 13:18:48,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-11 13:18:48,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:18:48,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-11 13:18:48,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3479, Unknown=0, NotChecked=0, Total=3660 [2020-10-11 13:18:48,777 INFO L87 Difference]: Start difference. First operand 644 states and 1286 transitions. Second operand 61 states. [2020-10-11 13:18:50,542 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-11 13:18:51,013 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-10-11 13:18:51,638 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-10-11 13:18:52,455 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-10-11 13:18:53,379 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-10-11 13:18:53,874 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-11 13:18:54,692 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-11 13:18:55,114 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-11 13:18:55,728 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-11 13:18:56,271 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-11 13:18:56,742 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-11 13:18:57,512 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 13:18:58,294 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-11 13:18:59,579 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-11 13:19:01,218 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-11 13:19:02,122 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2020-10-11 13:19:03,353 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-11 13:19:03,616 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-11 13:19:04,526 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-11 13:19:05,922 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-11 13:19:06,681 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-11 13:19:06,944 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-10-11 13:19:07,985 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-11 13:19:09,528 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-10-11 13:19:10,659 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-11 13:19:12,458 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-11 13:19:12,951 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-11 13:19:13,613 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-11 13:19:15,915 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2020-10-11 13:19:17,348 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-11 13:19:18,947 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-11 13:19:19,523 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-11 13:19:20,686 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-11 13:19:22,371 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2020-10-11 13:19:23,906 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-11 13:19:25,438 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-11 13:19:26,471 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-11 13:19:27,504 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-11 13:19:28,747 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2020-10-11 13:19:30,257 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-11 13:19:32,628 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-11 13:19:33,812 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-11 13:19:35,910 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-11 13:19:36,809 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-11 13:19:37,744 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-11 13:19:41,308 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2020-10-11 13:19:43,216 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-11 13:19:45,373 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-11 13:19:46,588 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-11 13:19:48,298 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-11 13:19:50,570 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2020-10-11 13:19:52,774 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2020-10-11 13:19:54,990 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-11 13:19:57,237 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-11 13:19:59,257 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2020-10-11 13:20:01,539 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-11 13:20:04,572 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-10-11 13:20:06,417 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-11 13:20:07,798 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-11 13:20:09,905 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-11 13:20:11,819 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-11 13:20:14,061 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-11 13:20:16,533 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-11 13:20:19,583 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-11 13:20:22,443 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-11 13:20:25,459 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2020-10-11 13:20:27,618 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-11 13:20:31,124 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-10-11 13:20:34,793 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-10-11 13:20:36,557 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-11 13:20:39,261 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-10-11 13:20:41,940 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-11 13:20:44,025 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-11 13:20:46,502 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-11 13:20:48,941 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-11 13:20:50,509 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 13:20:52,260 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-11 13:20:54,121 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-11 13:20:56,178 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 13:20:57,642 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-11 13:20:59,522 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-11 13:21:01,075 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-11 13:21:02,195 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-11 13:21:03,713 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-11 13:21:05,132 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-11 13:21:06,780 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-11 13:21:08,164 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-11 13:21:08,733 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-11 13:21:09,389 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-11 13:21:10,254 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-11 13:21:10,835 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-10-11 13:21:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:21:10,939 INFO L93 Difference]: Finished difference Result 1205 states and 2354 transitions. [2020-10-11 13:21:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-10-11 13:21:10,945 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 66 [2020-10-11 13:21:10,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:21:10,948 INFO L225 Difference]: With dead ends: 1205 [2020-10-11 13:21:10,948 INFO L226 Difference]: Without dead ends: 545 [2020-10-11 13:21:10,953 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7256 ImplicationChecksByTransitivity, 124.3s TimeCoverageRelationStatistics Valid=2138, Invalid=22354, Unknown=0, NotChecked=0, Total=24492 [2020-10-11 13:21:10,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-11 13:21:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 524. [2020-10-11 13:21:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-10-11 13:21:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1048 transitions. [2020-10-11 13:21:10,962 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1048 transitions. Word has length 66 [2020-10-11 13:21:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:21:10,962 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 1048 transitions. [2020-10-11 13:21:10,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-11 13:21:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1048 transitions. [2020-10-11 13:21:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-11 13:21:10,964 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:21:10,964 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:21:11,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:21:11,178 INFO L429 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:21:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:21:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash -145619693, now seen corresponding path program 4 times [2020-10-11 13:21:11,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:21:11,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143746093] [2020-10-11 13:21:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:21:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:21:11,810 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 17 [2020-10-11 13:21:12,546 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-10-11 13:21:13,087 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-10-11 13:21:13,324 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-10-11 13:21:14,161 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2020-10-11 13:21:15,064 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-10-11 13:21:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:21:17,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143746093] [2020-10-11 13:21:17,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305700085] [2020-10-11 13:21:17,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:21:17,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 13:21:17,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 13:21:17,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 119 conjunts are in the unsatisfiable core [2020-10-11 13:21:17,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:21:18,111 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2020-10-11 13:21:18,111 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:21:18,196 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-11 13:21:18,197 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:21:18,197 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:50 [2020-10-11 13:21:20,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:21:20,196 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:21:20,197 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:21:20,273 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:21:20,275 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:21:20,275 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:21:22,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:21:22,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:21:22,114 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:21:22,189 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:21:22,194 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:21:22,195 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:21:24,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:21:24,133 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:21:24,134 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:21:24,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:21:24,213 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:21:24,213 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:21:26,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-11 13:21:26,189 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2020-10-11 13:21:26,190 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 13:21:26,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 13:21:26,266 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 13:21:26,267 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:75, output treesize:54 [2020-10-11 13:21:30,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-11 13:21:30,573 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 31 [2020-10-11 13:21:30,588 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-10-11 13:21:30,800 INFO L545 ElimStorePlain]: Start of recursive call 2: 12 dim-0 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-10-11 13:21:30,814 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2020-10-11 13:21:30,821 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-11 13:21:31,010 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 22 [2020-10-11 13:21:31,012 INFO L625 ElimStorePlain]: treesize reduction 286, result has 14.6 percent of original size [2020-10-11 13:21:31,015 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-11 13:21:31,015 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:156, output treesize:49 [2020-10-11 13:21:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:21:31,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:21:31,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 72 [2020-10-11 13:21:31,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321921690] [2020-10-11 13:21:31,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-11 13:21:31,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:21:31,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-11 13:21:31,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=5036, Unknown=0, NotChecked=0, Total=5256 [2020-10-11 13:21:31,416 INFO L87 Difference]: Start difference. First operand 524 states and 1048 transitions. Second operand 73 states. [2020-10-11 13:21:35,267 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-11 13:21:36,331 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-10-11 13:21:37,607 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2020-10-11 13:21:39,176 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-11 13:21:41,092 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-11 13:21:43,579 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-11 13:21:45,356 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-11 13:21:47,104 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-11 13:21:49,373 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-10-11 13:21:52,011 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-10-11 13:21:54,890 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-11 13:21:57,078 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-11 13:21:59,475 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-11 13:22:02,368 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-11 13:22:06,609 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2020-10-11 13:22:10,270 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-11 13:22:13,100 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-11 13:22:16,128 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2020-10-11 13:22:19,731 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-10-11 13:22:25,476 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2020-10-11 13:22:30,012 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-11 13:22:34,839 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-11 13:22:39,773 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 131 DAG size of output: 99 [2020-10-11 13:22:43,523 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-11 13:22:47,623 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-11 13:22:51,302 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-10-11 13:22:57,060 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2020-10-11 13:23:02,040 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 142 DAG size of output: 107 [2020-10-11 13:23:05,392 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-11 13:23:09,098 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-11 13:23:12,348 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-10-11 13:23:17,379 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-11 13:23:21,937 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 122 DAG size of output: 96 [2020-10-11 13:23:24,961 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-10-11 13:23:27,981 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-10-11 13:23:30,540 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-10-11 13:23:34,736 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-11 13:23:37,874 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2020-10-11 13:23:40,191 WARN L193 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-11 13:23:42,442 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-11 13:23:44,531 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-11 13:23:47,832 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-11 13:23:49,971 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-11 13:23:50,861 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-11 13:23:51,922 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-11 13:23:52,903 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-11 13:23:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:23:54,140 INFO L93 Difference]: Finished difference Result 531 states and 1055 transitions. [2020-10-11 13:23:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-11 13:23:54,146 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 81 [2020-10-11 13:23:54,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:23:54,147 INFO L225 Difference]: With dead ends: 531 [2020-10-11 13:23:54,147 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 13:23:54,149 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 71 SyntacticMatches, 7 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3949 ImplicationChecksByTransitivity, 122.1s TimeCoverageRelationStatistics Valid=1165, Invalid=13841, Unknown=0, NotChecked=0, Total=15006 [2020-10-11 13:23:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 13:23:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 13:23:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 13:23:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 13:23:54,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-10-11 13:23:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:23:54,150 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 13:23:54,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-11 13:23:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 13:23:54,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 13:23:54,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:23:54,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 01:23:54 BasicIcfg [2020-10-11 13:23:54,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 13:23:54,358 INFO L168 Benchmark]: Toolchain (without parser) took 698808.50 ms. Allocated memory was 251.7 MB in the beginning and 236.5 MB in the end (delta: -15.2 MB). Free memory was 206.8 MB in the beginning and 123.8 MB in the end (delta: 83.0 MB). Peak memory consumption was 67.8 MB. Max. memory is 14.2 GB. [2020-10-11 13:23:54,358 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:23:54,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.23 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 206.8 MB in the beginning and 239.5 MB in the end (delta: -32.7 MB). Peak memory consumption was 39.8 MB. Max. memory is 14.2 GB. [2020-10-11 13:23:54,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.97 ms. Allocated memory is still 314.0 MB. Free memory was 239.5 MB in the beginning and 237.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:23:54,359 INFO L168 Benchmark]: Boogie Preprocessor took 37.01 ms. Allocated memory is still 314.0 MB. Free memory was 237.0 MB in the beginning and 234.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:23:54,359 INFO L168 Benchmark]: RCFGBuilder took 551.89 ms. Allocated memory is still 314.0 MB. Free memory was 234.4 MB in the beginning and 199.7 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 14.2 GB. [2020-10-11 13:23:54,359 INFO L168 Benchmark]: TraceAbstraction took 697266.10 ms. Allocated memory was 314.0 MB in the beginning and 236.5 MB in the end (delta: -77.6 MB). Free memory was 199.7 MB in the beginning and 123.8 MB in the end (delta: 75.8 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:23:54,361 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 863.23 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 206.8 MB in the beginning and 239.5 MB in the end (delta: -32.7 MB). Peak memory consumption was 39.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 83.97 ms. Allocated memory is still 314.0 MB. Free memory was 239.5 MB in the beginning and 237.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 37.01 ms. Allocated memory is still 314.0 MB. Free memory was 237.0 MB in the beginning and 234.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 551.89 ms. Allocated memory is still 314.0 MB. Free memory was 234.4 MB in the beginning and 199.7 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 697266.10 ms. Allocated memory was 314.0 MB in the beginning and 236.5 MB in the end (delta: -77.6 MB). Free memory was 199.7 MB in the beginning and 123.8 MB in the end (delta: 75.8 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4309 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 63 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 355 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 137 PlacesBefore, 40 PlacesAfterwards, 142 TransitionsBefore, 40 TransitionsAfterwards, 5744 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 129 TotalNumberOfCompositions, 10078 MoverChecksTotal - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 922]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 131 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 697.0s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 381.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 1362 SDtfs, 7902 SDslu, 14912 SDs, 0 SdLazy, 20769 SolverSat, 1986 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1343 GetRequests, 593 SyntacticMatches, 14 SemanticMatches, 736 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22448 ImplicationChecksByTransitivity, 331.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 5622 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 304.7s InterpolantComputationTime, 1272 NumberOfCodeBlocks, 1265 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 1237 ConstructedInterpolants, 5 QuantifiedInterpolants, 1174627 SizeOfPredicates, 241 NumberOfNonLiveVariables, 4390 ConjunctsInSsa, 480 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 246/1394 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...