/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/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:55:22,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:55:22,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:55:22,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:55:22,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:55:22,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:55:22,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:55:22,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:55:22,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:55:22,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:55:22,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:55:22,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:55:22,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:55:22,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:55:22,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:55:22,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:55:22,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:55:22,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:55:22,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:55:22,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:55:22,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:55:22,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:55:22,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:55:22,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:55:22,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:55:22,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:55:22,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:55:22,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:55:22,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:55:22,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:55:22,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:55:22,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:55:22,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:55:22,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:55:22,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:55:22,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:55:22,150 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 [2020-12-17 23:55:22,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:55:22,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:55:22,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:55:22,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:55:22,217 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:55:22,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:55:22,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:55:22,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:55:22,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:55:22,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:55:22,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:55:22,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:55:22,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:55:22,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:55:22,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:55:22,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:55:22,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:55:22,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:55:22,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:55:22,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:55:22,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:55:22,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:55:22,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:55:22,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:55:22,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:55:22,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:55:22,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:55:22,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:55:22,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:55:22,227 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:55:22,227 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:55:22,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:55:22,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:55:22,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:55:22,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:55:22,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:55:22,655 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:55:22,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-12-17 23:55:22,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0302a19/7b46c5b3cf48407999432ca0edf22aa7/FLAG865f9f3bb [2020-12-17 23:55:23,525 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:55:23,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-12-17 23:55:23,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0302a19/7b46c5b3cf48407999432ca0edf22aa7/FLAG865f9f3bb [2020-12-17 23:55:23,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0302a19/7b46c5b3cf48407999432ca0edf22aa7 [2020-12-17 23:55:23,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:55:23,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:55:23,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:55:23,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:55:23,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:55:23,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:55:23" (1/1) ... [2020-12-17 23:55:23,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73db5d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:23, skipping insertion in model container [2020-12-17 23:55:23,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:55:23" (1/1) ... [2020-12-17 23:55:23,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:55:23,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:55:24,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:55:24,289 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:55:24,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:55:24,433 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:55:24,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24 WrapperNode [2020-12-17 23:55:24,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:55:24,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:55:24,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:55:24,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:55:24,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:55:24,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:55:24,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:55:24,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:55:24,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (1/1) ... [2020-12-17 23:55:24,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:55:24,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:55:24,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:55:24,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:55:24,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (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 [2020-12-17 23:55:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:55:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:55:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:55:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:55:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:55:24,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:55:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:55:24,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:55:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:55:24,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:55:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:55:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:55:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:55:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:55:24,684 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:55:25,088 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:55:25,089 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:55:25,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:55:25 BoogieIcfgContainer [2020-12-17 23:55:25,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:55:25,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:55:25,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:55:25,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:55:25,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:55:23" (1/3) ... [2020-12-17 23:55:25,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c9bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:55:25, skipping insertion in model container [2020-12-17 23:55:25,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:55:24" (2/3) ... [2020-12-17 23:55:25,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9c9bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:55:25, skipping insertion in model container [2020-12-17 23:55:25,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:55:25" (3/3) ... [2020-12-17 23:55:25,101 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-12-17 23:55:25,120 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:55:25,121 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:55:25,124 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:55:25,125 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:55:25,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,176 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,176 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,179 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,179 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,179 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,179 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,182 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,182 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,182 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,183 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,183 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,183 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,183 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,184 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,184 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,184 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,184 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,187 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,188 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:55:25,200 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:55:25,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:55:25,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:55:25,240 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:55:25,241 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:55:25,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:55:25,241 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:55:25,241 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:55:25,241 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:55:25,241 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:55:25,255 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-12-17 23:55:26,316 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) [2020-12-17 23:55:26,358 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) [2020-12-17 23:55:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-17 23:55:26,417 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:26,418 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] [2020-12-17 23:55:26,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash 143249805, now seen corresponding path program 1 times [2020-12-17 23:55:26,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:26,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125354775] [2020-12-17 23:55:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:27,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125354775] [2020-12-17 23:55:27,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:27,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:55:27,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988240324] [2020-12-17 23:55:27,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:55:27,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:55:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:55:27,104 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) [2020-12-17 23:55:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:27,575 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2020-12-17 23:55:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:55:27,577 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 [2020-12-17 23:55:27,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:27,581 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 [2020-12-17 23:55:27,582 INFO L78 Accepts]: Start accepts. Automaton has 12200 states and 42464 transitions. Word has length 42 [2020-12-17 23:55:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:27,584 INFO L481 AbstractCegarLoop]: Abstraction has 12200 states and 42464 transitions. [2020-12-17 23:55:27,585 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) [2020-12-17 23:55:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 12200 states and 42464 transitions. [2020-12-17 23:55:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-17 23:55:27,610 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:27,611 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] [2020-12-17 23:55:27,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:55:27,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:27,616 INFO L82 PathProgramCache]: Analyzing trace with hash -521439444, now seen corresponding path program 1 times [2020-12-17 23:55:27,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:27,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503041796] [2020-12-17 23:55:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:27,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503041796] [2020-12-17 23:55:27,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:27,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:55:27,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038740598] [2020-12-17 23:55:27,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:55:27,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:27,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:55:27,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:55:27,922 INFO L87 Difference]: Start difference. First operand 12200 states and 42464 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2020-12-17 23:55:28,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:28,370 INFO L93 Difference]: Finished difference Result 19304 states and 66832 transitions. [2020-12-17 23:55:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:55:28,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2020-12-17 23:55:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:28,372 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 [2020-12-17 23:55:28,372 INFO L78 Accepts]: Start accepts. Automaton has 19304 states and 66832 transitions. Word has length 44 [2020-12-17 23:55:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:28,373 INFO L481 AbstractCegarLoop]: Abstraction has 19304 states and 66832 transitions. [2020-12-17 23:55:28,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2020-12-17 23:55:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 19304 states and 66832 transitions. [2020-12-17 23:55:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 23:55:28,398 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:28,398 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] [2020-12-17 23:55:28,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:55:28,398 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:28,399 INFO L82 PathProgramCache]: Analyzing trace with hash -95566873, now seen corresponding path program 1 times [2020-12-17 23:55:28,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:28,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717583469] [2020-12-17 23:55:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:28,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717583469] [2020-12-17 23:55:28,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:28,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:55:28,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969837522] [2020-12-17 23:55:28,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:55:28,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:28,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:55:28,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:55:28,799 INFO L87 Difference]: Start difference. First operand 19304 states and 66832 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-12-17 23:55:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:29,277 INFO L93 Difference]: Finished difference Result 26004 states and 89182 transitions. [2020-12-17 23:55:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:55:29,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-12-17 23:55:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:29,279 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-17 23:55:29,280 INFO L78 Accepts]: Start accepts. Automaton has 26004 states and 89182 transitions. Word has length 46 [2020-12-17 23:55:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:29,280 INFO L481 AbstractCegarLoop]: Abstraction has 26004 states and 89182 transitions. [2020-12-17 23:55:29,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-12-17 23:55:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 26004 states and 89182 transitions. [2020-12-17 23:55:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 23:55:29,320 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:29,320 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] [2020-12-17 23:55:29,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:55:29,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:29,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1701093113, now seen corresponding path program 1 times [2020-12-17 23:55:29,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:29,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851173138] [2020-12-17 23:55:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:29,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851173138] [2020-12-17 23:55:29,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:29,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:55:29,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086374187] [2020-12-17 23:55:29,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:55:29,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:29,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:55:29,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:55:29,621 INFO L87 Difference]: Start difference. First operand 26004 states and 89182 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) [2020-12-17 23:55:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:29,903 INFO L93 Difference]: Finished difference Result 17329 states and 57864 transitions. [2020-12-17 23:55:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:55:29,903 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 [2020-12-17 23:55:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:29,907 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 [2020-12-17 23:55:29,907 INFO L78 Accepts]: Start accepts. Automaton has 17329 states and 57864 transitions. Word has length 47 [2020-12-17 23:55:29,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:29,907 INFO L481 AbstractCegarLoop]: Abstraction has 17329 states and 57864 transitions. [2020-12-17 23:55:29,908 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) [2020-12-17 23:55:29,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17329 states and 57864 transitions. [2020-12-17 23:55:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-17 23:55:29,932 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:29,932 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] [2020-12-17 23:55:29,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:55:29,932 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:29,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:29,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1482952598, now seen corresponding path program 1 times [2020-12-17 23:55:29,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:29,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247223097] [2020-12-17 23:55:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:30,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247223097] [2020-12-17 23:55:30,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:30,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:55:30,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716001334] [2020-12-17 23:55:30,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:55:30,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:30,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:55:30,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:55:30,184 INFO L87 Difference]: Start difference. First operand 17329 states and 57864 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) [2020-12-17 23:55:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:30,619 INFO L93 Difference]: Finished difference Result 11170 states and 36202 transitions. [2020-12-17 23:55:30,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:55:30,620 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 [2020-12-17 23:55:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:30,621 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:55:30,621 INFO L78 Accepts]: Start accepts. Automaton has 11170 states and 36202 transitions. Word has length 48 [2020-12-17 23:55:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:30,621 INFO L481 AbstractCegarLoop]: Abstraction has 11170 states and 36202 transitions. [2020-12-17 23:55:30,622 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) [2020-12-17 23:55:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11170 states and 36202 transitions. [2020-12-17 23:55:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-17 23:55:30,645 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:30,646 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] [2020-12-17 23:55:30,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:55:30,646 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:30,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2070133385, now seen corresponding path program 1 times [2020-12-17 23:55:30,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:30,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543246012] [2020-12-17 23:55:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:30,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543246012] [2020-12-17 23:55:30,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:30,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:55:30,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550029077] [2020-12-17 23:55:30,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:55:30,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:30,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:55:30,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:55:30,776 INFO L87 Difference]: Start difference. First operand 11170 states and 36202 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) [2020-12-17 23:55:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:31,200 INFO L93 Difference]: Finished difference Result 7993 states and 25639 transitions. [2020-12-17 23:55:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:55:31,201 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 [2020-12-17 23:55:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:31,202 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 [2020-12-17 23:55:31,202 INFO L78 Accepts]: Start accepts. Automaton has 7993 states and 25639 transitions. Word has length 50 [2020-12-17 23:55:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:31,202 INFO L481 AbstractCegarLoop]: Abstraction has 7993 states and 25639 transitions. [2020-12-17 23:55:31,203 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) [2020-12-17 23:55:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7993 states and 25639 transitions. [2020-12-17 23:55:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-17 23:55:31,283 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:31,283 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] [2020-12-17 23:55:31,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:55:31,283 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:31,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2090541767, now seen corresponding path program 1 times [2020-12-17 23:55:31,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:31,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392506970] [2020-12-17 23:55:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:31,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392506970] [2020-12-17 23:55:31,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:31,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:55:31,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804787977] [2020-12-17 23:55:31,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:55:31,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:31,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:55:31,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:55:31,482 INFO L87 Difference]: Start difference. First operand 7993 states and 25639 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) [2020-12-17 23:55:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:31,650 INFO L93 Difference]: Finished difference Result 12428 states and 39394 transitions. [2020-12-17 23:55:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:55:31,651 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 [2020-12-17 23:55:31,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:31,653 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:55:31,653 INFO L78 Accepts]: Start accepts. Automaton has 12428 states and 39394 transitions. Word has length 54 [2020-12-17 23:55:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:31,654 INFO L481 AbstractCegarLoop]: Abstraction has 12428 states and 39394 transitions. [2020-12-17 23:55:31,655 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) [2020-12-17 23:55:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 12428 states and 39394 transitions. [2020-12-17 23:55:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-17 23:55:31,681 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:55:31,681 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] [2020-12-17 23:55:31,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:55:31,682 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:55:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:55:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash -996669883, now seen corresponding path program 2 times [2020-12-17 23:55:31,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:55:31,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541203127] [2020-12-17 23:55:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:55:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:55:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:55:31,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541203127] [2020-12-17 23:55:31,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:55:31,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:55:31,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941878931] [2020-12-17 23:55:31,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:55:31,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:55:31,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:55:31,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:55:31,791 INFO L87 Difference]: Start difference. First operand 12428 states and 39394 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2020-12-17 23:55:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:55:32,134 INFO L93 Difference]: Finished difference Result 18640 states and 58534 transitions. [2020-12-17 23:55:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-17 23:55:32,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 [2020-12-17 23:55:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:55:32,135 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-17 23:55:32,136 INFO L78 Accepts]: Start accepts. Automaton has 18640 states and 58534 transitions. Word has length 54 [2020-12-17 23:55:32,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:55:32,136 INFO L481 AbstractCegarLoop]: Abstraction has 18640 states and 58534 transitions. [2020-12-17 23:55:32,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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) [2020-12-17 23:55:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18640 states and 58534 transitions. [2020-12-17 23:55:32,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:55:32,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-17 23:55:32,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:55:32 BasicIcfg [2020-12-17 23:55:32,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:55:32,190 INFO L168 Benchmark]: Toolchain (without parser) took 8383.47 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 968.9 MB). Free memory was 277.3 MB in the beginning and 1.0 GB in the end (delta: -727.2 MB). Peak memory consumption was 243.9 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:32,190 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:55:32,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.13 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:32,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.18 ms. Allocated memory is still 302.0 MB. Free memory was 246.2 MB in the beginning and 284.4 MB in the end (delta: -38.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:32,193 INFO L168 Benchmark]: Boogie Preprocessor took 64.40 ms. Allocated memory is still 302.0 MB. Free memory was 284.4 MB in the beginning and 283.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:55:32,193 INFO L168 Benchmark]: RCFGBuilder took 495.14 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 259.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:32,194 INFO L168 Benchmark]: TraceAbstraction took 7093.77 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 968.9 MB). Free memory was 258.1 MB in the beginning and 1.0 GB in the end (delta: -746.4 MB). Peak memory consumption was 224.6 MB. Max. memory is 16.0 GB. [2020-12-17 23:55:32,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 625.13 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.2 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 95.18 ms. Allocated memory is still 302.0 MB. Free memory was 246.2 MB in the beginning and 284.4 MB in the end (delta: -38.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 64.40 ms. Allocated memory is still 302.0 MB. Free memory was 284.4 MB in the beginning and 283.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 495.14 ms. Allocated memory is still 302.0 MB. Free memory was 283.3 MB in the beginning and 259.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7093.77 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 968.9 MB). Free memory was 258.1 MB in the beginning and 1.0 GB in the end (delta: -746.4 MB). Peak memory consumption was 224.6 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: 6.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 889 SDtfs, 1681 SDslu, 3023 SDs, 0 SdLazy, 317 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26004occurred in iteration=3, 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, 0.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 46695 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...