/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-18 00:03:05,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-18 00:03:06,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-18 00:03:06,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-18 00:03:06,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-18 00:03:06,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-18 00:03:06,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-18 00:03:06,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-18 00:03:06,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-18 00:03:06,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-18 00:03:06,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-18 00:03:06,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-18 00:03:06,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-18 00:03:06,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-18 00:03:06,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-18 00:03:06,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-18 00:03:06,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-18 00:03:06,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-18 00:03:06,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-18 00:03:06,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-18 00:03:06,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-18 00:03:06,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-18 00:03:06,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-18 00:03:06,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-18 00:03:06,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-18 00:03:06,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-18 00:03:06,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-18 00:03:06,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-18 00:03:06,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-18 00:03:06,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-18 00:03:06,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-18 00:03:06,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-18 00:03:06,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-18 00:03:06,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-18 00:03:06,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-18 00:03:06,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-18 00:03:06,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2020-12-18 00:03:06,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-18 00:03:06,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-18 00:03:06,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-18 00:03:06,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-18 00:03:06,169 INFO L138 SettingsManager]: * Use SBE=true [2020-12-18 00:03:06,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-18 00:03:06,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-18 00:03:06,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-18 00:03:06,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-18 00:03:06,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-18 00:03:06,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-18 00:03:06,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-18 00:03:06,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-18 00:03:06,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-18 00:03:06,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-18 00:03:06,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-18 00:03:06,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-18 00:03:06,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-18 00:03:06,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-18 00:03:06,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-18 00:03:06,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-18 00:03:06,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-18 00:03:06,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-18 00:03:06,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-18 00:03:06,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-18 00:03:06,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-18 00:03:06,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-18 00:03:06,174 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-18 00:03:06,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-18 00:03:06,175 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-18 00:03:06,175 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-18 00:03:06,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-18 00:03:06,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-18 00:03:06,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-18 00:03:06,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-18 00:03:06,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-18 00:03:06,673 INFO L275 PluginConnector]: CDTParser initialized [2020-12-18 00:03:06,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-12-18 00:03:06,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b226856f2/adcc83a061cb4fbbbc370c9ac0009e4d/FLAG4bd2a6283 [2020-12-18 00:03:07,557 INFO L306 CDTParser]: Found 1 translation units. [2020-12-18 00:03:07,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-12-18 00:03:07,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b226856f2/adcc83a061cb4fbbbc370c9ac0009e4d/FLAG4bd2a6283 [2020-12-18 00:03:07,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b226856f2/adcc83a061cb4fbbbc370c9ac0009e4d [2020-12-18 00:03:07,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-18 00:03:07,833 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-18 00:03:07,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-18 00:03:07,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-18 00:03:07,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-18 00:03:07,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:03:07" (1/1) ... [2020-12-18 00:03:07,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174d8790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:07, skipping insertion in model container [2020-12-18 00:03:07,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:03:07" (1/1) ... [2020-12-18 00:03:07,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-18 00:03:07,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-18 00:03:08,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:03:08,379 INFO L203 MainTranslator]: Completed pre-run [2020-12-18 00:03:08,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:03:08,546 INFO L208 MainTranslator]: Completed translation [2020-12-18 00:03:08,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08 WrapperNode [2020-12-18 00:03:08,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-18 00:03:08,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-18 00:03:08,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-18 00:03:08,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-18 00:03:08,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-18 00:03:08,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-18 00:03:08,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-18 00:03:08,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-18 00:03:08,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (1/1) ... [2020-12-18 00:03:08,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-18 00:03:08,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-18 00:03:08,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-18 00:03:08,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-18 00:03:08,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (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 [2020-12-18 00:03:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-18 00:03:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-18 00:03:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-18 00:03:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-18 00:03:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-18 00:03:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-18 00:03:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-18 00:03:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-18 00:03:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-18 00:03:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-18 00:03:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-18 00:03:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-18 00:03:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-18 00:03:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-18 00:03:08,750 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-18 00:03:09,341 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-18 00:03:09,342 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-18 00:03:09,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:03:09 BoogieIcfgContainer [2020-12-18 00:03:09,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-18 00:03:09,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-18 00:03:09,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-18 00:03:09,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-18 00:03:09,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:03:07" (1/3) ... [2020-12-18 00:03:09,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6d86b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:03:09, skipping insertion in model container [2020-12-18 00:03:09,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:08" (2/3) ... [2020-12-18 00:03:09,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6d86b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:03:09, skipping insertion in model container [2020-12-18 00:03:09,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:03:09" (3/3) ... [2020-12-18 00:03:09,356 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-12-18 00:03:09,373 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-18 00:03:09,373 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-18 00:03:09,378 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-18 00:03:09,379 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-18 00:03:09,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,435 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,435 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,435 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,436 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,436 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,436 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,437 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,437 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,437 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,437 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,438 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,438 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,439 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,439 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,441 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,443 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,444 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,444 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,444 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,445 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,445 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,450 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,450 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,451 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,460 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,460 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,476 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,477 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:09,482 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-18 00:03:09,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-18 00:03:09,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-18 00:03:09,534 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-18 00:03:09,534 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-18 00:03:09,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-18 00:03:09,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-18 00:03:09,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-18 00:03:09,535 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-18 00:03:09,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-18 00:03:09,553 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-12-18 00:03:10,420 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-18 00:03:10,534 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:10,535 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:10,536 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:10,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:10,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1266406659, now seen corresponding path program 1 times [2020-12-18 00:03:10,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:10,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661716248] [2020-12-18 00:03:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:11,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661716248] [2020-12-18 00:03:11,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:11,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-18 00:03:11,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558487476] [2020-12-18 00:03:11,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-18 00:03:11,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:11,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-18 00:03:11,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-18 00:03:11,147 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:11,566 INFO L93 Difference]: Finished difference Result 11318 states and 39237 transitions. [2020-12-18 00:03:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-18 00:03:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-12-18 00:03:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:11,572 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:03:11,572 INFO L78 Accepts]: Start accepts. Automaton has 11318 states and 39237 transitions. Word has length 42 [2020-12-18 00:03:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:11,574 INFO L481 AbstractCegarLoop]: Abstraction has 11318 states and 39237 transitions. [2020-12-18 00:03:11,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 11318 states and 39237 transitions. [2020-12-18 00:03:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-18 00:03:11,603 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:11,604 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:11,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-18 00:03:11,605 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash 429548758, now seen corresponding path program 1 times [2020-12-18 00:03:11,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:11,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612802961] [2020-12-18 00:03:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:11,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612802961] [2020-12-18 00:03:11,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:11,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-18 00:03:11,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538190956] [2020-12-18 00:03:11,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-18 00:03:11,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:11,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-18 00:03:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-18 00:03:11,760 INFO L87 Difference]: Start difference. First operand 11318 states and 39237 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:12,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:12,515 INFO L93 Difference]: Finished difference Result 24744 states and 84744 transitions. [2020-12-18 00:03:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-18 00:03:12,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-12-18 00:03:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:12,518 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:03:12,518 INFO L78 Accepts]: Start accepts. Automaton has 24744 states and 84744 transitions. Word has length 45 [2020-12-18 00:03:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:12,519 INFO L481 AbstractCegarLoop]: Abstraction has 24744 states and 84744 transitions. [2020-12-18 00:03:12,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 24744 states and 84744 transitions. [2020-12-18 00:03:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-18 00:03:12,579 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:12,579 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:12,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-18 00:03:12,580 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1422766975, now seen corresponding path program 1 times [2020-12-18 00:03:12,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:12,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715911673] [2020-12-18 00:03:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:12,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715911673] [2020-12-18 00:03:12,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:12,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-18 00:03:12,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173506919] [2020-12-18 00:03:12,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-18 00:03:12,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:12,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-18 00:03:12,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-18 00:03:12,855 INFO L87 Difference]: Start difference. First operand 24744 states and 84744 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:13,264 INFO L93 Difference]: Finished difference Result 21558 states and 71824 transitions. [2020-12-18 00:03:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-18 00:03:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-12-18 00:03:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:13,267 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:03:13,268 INFO L78 Accepts]: Start accepts. Automaton has 21558 states and 71824 transitions. Word has length 47 [2020-12-18 00:03:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:13,268 INFO L481 AbstractCegarLoop]: Abstraction has 21558 states and 71824 transitions. [2020-12-18 00:03:13,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 21558 states and 71824 transitions. [2020-12-18 00:03:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-18 00:03:13,323 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:13,324 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:13,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-18 00:03:13,324 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:13,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1775856222, now seen corresponding path program 1 times [2020-12-18 00:03:13,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:13,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193221616] [2020-12-18 00:03:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:13,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193221616] [2020-12-18 00:03:13,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:13,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:03:13,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805242059] [2020-12-18 00:03:13,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:03:13,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:03:13,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:03:13,592 INFO L87 Difference]: Start difference. First operand 21558 states and 71824 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:13,971 INFO L93 Difference]: Finished difference Result 13368 states and 43072 transitions. [2020-12-18 00:03:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-18 00:03:13,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-12-18 00:03:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:13,975 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-18 00:03:13,975 INFO L78 Accepts]: Start accepts. Automaton has 13368 states and 43072 transitions. Word has length 48 [2020-12-18 00:03:13,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:13,975 INFO L481 AbstractCegarLoop]: Abstraction has 13368 states and 43072 transitions. [2020-12-18 00:03:13,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 13368 states and 43072 transitions. [2020-12-18 00:03:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-18 00:03:14,003 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:14,003 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:14,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-18 00:03:14,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:14,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash -2020113217, now seen corresponding path program 1 times [2020-12-18 00:03:14,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:14,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560038383] [2020-12-18 00:03:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:14,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560038383] [2020-12-18 00:03:14,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:14,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-18 00:03:14,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513183241] [2020-12-18 00:03:14,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-18 00:03:14,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-18 00:03:14,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-18 00:03:14,196 INFO L87 Difference]: Start difference. First operand 13368 states and 43072 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:14,663 INFO L93 Difference]: Finished difference Result 8418 states and 27094 transitions. [2020-12-18 00:03:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-18 00:03:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-12-18 00:03:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:14,665 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-12-18 00:03:14,665 INFO L78 Accepts]: Start accepts. Automaton has 8418 states and 27094 transitions. Word has length 50 [2020-12-18 00:03:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:14,665 INFO L481 AbstractCegarLoop]: Abstraction has 8418 states and 27094 transitions. [2020-12-18 00:03:14,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8418 states and 27094 transitions. [2020-12-18 00:03:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-18 00:03:14,691 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:14,691 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:14,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-18 00:03:14,692 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:14,692 INFO L82 PathProgramCache]: Analyzing trace with hash -54775455, now seen corresponding path program 1 times [2020-12-18 00:03:14,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:14,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263415456] [2020-12-18 00:03:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:14,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263415456] [2020-12-18 00:03:14,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:14,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:03:14,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500173207] [2020-12-18 00:03:14,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:03:14,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:14,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:03:14,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:03:14,863 INFO L87 Difference]: Start difference. First operand 8418 states and 27094 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:15,260 INFO L93 Difference]: Finished difference Result 13208 states and 41968 transitions. [2020-12-18 00:03:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-18 00:03:15,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-12-18 00:03:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:15,262 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-18 00:03:15,262 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 41968 transitions. Word has length 54 [2020-12-18 00:03:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:15,263 INFO L481 AbstractCegarLoop]: Abstraction has 13208 states and 41968 transitions. [2020-12-18 00:03:15,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 41968 transitions. [2020-12-18 00:03:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-18 00:03:15,325 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:15,326 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:15,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-18 00:03:15,326 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:15,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1436109045, now seen corresponding path program 2 times [2020-12-18 00:03:15,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:15,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334426683] [2020-12-18 00:03:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:15,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334426683] [2020-12-18 00:03:15,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:15,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:03:15,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365103530] [2020-12-18 00:03:15,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:03:15,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:15,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:03:15,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:03:15,472 INFO L87 Difference]: Start difference. First operand 13208 states and 41968 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:15,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:15,918 INFO L93 Difference]: Finished difference Result 17918 states and 56638 transitions. [2020-12-18 00:03:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-18 00:03:15,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-12-18 00:03:15,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:15,919 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-12-18 00:03:15,920 INFO L78 Accepts]: Start accepts. Automaton has 17918 states and 56638 transitions. Word has length 54 [2020-12-18 00:03:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:15,921 INFO L481 AbstractCegarLoop]: Abstraction has 17918 states and 56638 transitions. [2020-12-18 00:03:15,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 17918 states and 56638 transitions. [2020-12-18 00:03:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-18 00:03:15,968 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:15,968 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:03:15,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-18 00:03:15,969 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:15,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1423150337, now seen corresponding path program 3 times [2020-12-18 00:03:15,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:15,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333363542] [2020-12-18 00:03:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:16,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333363542] [2020-12-18 00:03:16,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:16,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:03:16,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643253299] [2020-12-18 00:03:16,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:03:16,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:16,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:03:16,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:03:16,090 INFO L87 Difference]: Start difference. First operand 17918 states and 56638 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:16,380 INFO L93 Difference]: Finished difference Result 24405 states and 76693 transitions. [2020-12-18 00:03:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-18 00:03:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-12-18 00:03:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:16,382 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:03:16,382 INFO L78 Accepts]: Start accepts. Automaton has 24405 states and 76693 transitions. Word has length 54 [2020-12-18 00:03:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:16,382 INFO L481 AbstractCegarLoop]: Abstraction has 24405 states and 76693 transitions. [2020-12-18 00:03:16,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:03:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 24405 states and 76693 transitions. [2020-12-18 00:03:16,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-18 00:03:16,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-18 00:03:16,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 12:03:16 BasicIcfg [2020-12-18 00:03:16,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-18 00:03:16,432 INFO L168 Benchmark]: Toolchain (without parser) took 8597.79 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 943.7 MB). Free memory was 276.9 MB in the beginning and 944.8 MB in the end (delta: -667.8 MB). Peak memory consumption was 277.5 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:16,433 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.9 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:03:16,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.56 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.0 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:16,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.21 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 283.3 MB in the end (delta: -37.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:16,435 INFO L168 Benchmark]: Boogie Preprocessor took 28.73 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 282.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:03:16,436 INFO L168 Benchmark]: RCFGBuilder took 677.42 ms. Allocated memory is still 302.0 MB. Free memory was 282.2 MB in the beginning and 259.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:16,437 INFO L168 Benchmark]: TraceAbstraction took 7081.50 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 943.7 MB). Free memory was 259.1 MB in the beginning and 944.8 MB in the end (delta: -685.6 MB). Peak memory consumption was 260.2 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:16,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 271.9 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 710.56 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.0 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 91.21 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 283.3 MB in the end (delta: -37.4 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.73 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 282.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 677.42 ms. Allocated memory is still 302.0 MB. Free memory was 282.2 MB in the beginning and 259.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7081.50 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 943.7 MB). Free memory was 259.1 MB in the beginning and 944.8 MB in the end (delta: -685.6 MB). Peak memory consumption was 260.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 975 SDtfs, 1678 SDslu, 3447 SDs, 0 SdLazy, 390 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24744occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 45628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...