/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:50:15,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:50:15,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:50:15,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:50:15,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:50:15,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:50:15,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:50:15,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:50:15,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:50:15,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:50:15,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:50:15,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:50:15,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:50:15,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:50:15,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:50:15,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:50:15,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:50:15,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:50:15,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:50:15,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:50:15,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:50:15,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:50:15,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:50:15,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:50:15,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:50:15,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:50:15,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:50:15,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:50:15,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:50:15,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:50:15,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:50:15,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:50:15,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:50:15,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:50:15,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:50:15,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:50:15,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:50:15,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:50:15,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:50:15,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:50:15,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:50:15,492 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:50:15,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:50:15,493 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:50:15,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:50:15,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:50:15,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:50:15,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:50:15,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:50:15,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:50:15,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:50:15,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:50:15,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:50:15,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:50:15,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:50:15,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:50:15,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:50:15,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:50:15,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:50:15,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:50:15,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:50:15,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:50:15,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:50:15,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:50:15,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:50:15,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:50:15,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:50:15,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:50:15,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:50:15,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:50:15,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:50:15,968 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:50:15,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-11-09 12:50:16,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f854674/4dcdddf8245c42ee946e2dccda94aafc/FLAGcda1dd32e [2020-11-09 12:50:16,845 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:50:16,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-11-09 12:50:16,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f854674/4dcdddf8245c42ee946e2dccda94aafc/FLAGcda1dd32e [2020-11-09 12:50:17,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f854674/4dcdddf8245c42ee946e2dccda94aafc [2020-11-09 12:50:17,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:50:17,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:50:17,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:50:17,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:50:17,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:50:17,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:17,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11fb3bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17, skipping insertion in model container [2020-11-09 12:50:17,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:17,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:50:17,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:50:17,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:50:17,734 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:50:17,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:50:17,998 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:50:17,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17 WrapperNode [2020-11-09 12:50:17,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:50:18,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:50:18,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:50:18,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:50:18,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:50:18,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:50:18,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:50:18,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:50:18,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (1/1) ... [2020-11-09 12:50:18,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:50:18,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:50:18,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:50:18,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:50:18,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (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 [2020-11-09 12:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:50:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:50:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:50:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:50:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:50:18,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:50:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:50:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:50:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:50:18,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:50:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:50:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:50:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:50:18,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:50:18,268 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:50:18,786 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:50:18,786 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:50:18,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:18 BoogieIcfgContainer [2020-11-09 12:50:18,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:50:18,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:50:18,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:50:18,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:50:18,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:50:17" (1/3) ... [2020-11-09 12:50:18,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646e1e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:50:18, skipping insertion in model container [2020-11-09 12:50:18,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:17" (2/3) ... [2020-11-09 12:50:18,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646e1e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:50:18, skipping insertion in model container [2020-11-09 12:50:18,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:18" (3/3) ... [2020-11-09 12:50:18,799 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-11-09 12:50:18,815 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:50:18,815 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:50:18,819 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:50:18,820 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:50:18,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,857 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,857 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,858 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,859 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,860 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,860 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,861 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,861 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,861 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,861 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,862 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,872 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,876 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,876 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:18,879 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:50:18,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:50:18,939 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:50:18,939 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:50:18,940 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:50:18,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:50:18,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:50:18,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:50:18,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:50:18,940 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:50:18,953 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:50:18,955 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:50:18,958 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:50:18,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 12:50:19,009 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 12:50:19,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:50:19,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:50:19,017 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:50:22,194 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-11-09 12:50:22,366 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-09 12:50:23,251 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:50:23,369 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:50:23,614 WARN L194 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:50:23,922 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-09 12:50:23,922 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 12:50:23,929 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:50:23,956 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:50:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:50:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:50:23,965 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:23,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:23,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-09 12:50:23,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:23,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125012757] [2020-11-09 12:50:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:24,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125012757] [2020-11-09 12:50:24,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:24,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:50:24,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180475470] [2020-11-09 12:50:24,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:50:24,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:24,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:50:24,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:24,259 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:50:24,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:24,309 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-11-09 12:50:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:50:24,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:50:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:24,326 INFO L225 Difference]: With dead ends: 266 [2020-11-09 12:50:24,326 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 12:50:24,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 12:50:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 12:50:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 12:50:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-09 12:50:24,392 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-11-09 12:50:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:24,393 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-09 12:50:24,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:50:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-09 12:50:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:50:24,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:24,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:24,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:50:24,396 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1337858444, now seen corresponding path program 1 times [2020-11-09 12:50:24,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:24,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297334308] [2020-11-09 12:50:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:24,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297334308] [2020-11-09 12:50:24,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:24,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:50:24,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004793657] [2020-11-09 12:50:24,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:50:24,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:24,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:50:24,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:24,501 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-09 12:50:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:24,545 INFO L93 Difference]: Finished difference Result 284 states and 746 transitions. [2020-11-09 12:50:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:50:24,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 12:50:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:24,550 INFO L225 Difference]: With dead ends: 284 [2020-11-09 12:50:24,550 INFO L226 Difference]: Without dead ends: 164 [2020-11-09 12:50:24,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:24,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-09 12:50:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-11-09 12:50:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-09 12:50:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-11-09 12:50:24,580 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 10 [2020-11-09 12:50:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:24,580 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-11-09 12:50:24,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:50:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-11-09 12:50:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:50:24,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:24,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:24,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:50:24,584 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:24,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1440714027, now seen corresponding path program 1 times [2020-11-09 12:50:24,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:24,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814268853] [2020-11-09 12:50:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:24,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814268853] [2020-11-09 12:50:24,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:24,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763932909] [2020-11-09 12:50:24,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:24,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:24,715 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 4 states. [2020-11-09 12:50:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:24,753 INFO L93 Difference]: Finished difference Result 224 states and 564 transitions. [2020-11-09 12:50:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:24,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 12:50:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:24,755 INFO L225 Difference]: With dead ends: 224 [2020-11-09 12:50:24,755 INFO L226 Difference]: Without dead ends: 134 [2020-11-09 12:50:24,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-09 12:50:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-09 12:50:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-09 12:50:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 326 transitions. [2020-11-09 12:50:24,770 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 326 transitions. Word has length 11 [2020-11-09 12:50:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:24,770 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 326 transitions. [2020-11-09 12:50:24,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 326 transitions. [2020-11-09 12:50:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:50:24,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:24,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:24,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:50:24,773 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1475569497, now seen corresponding path program 2 times [2020-11-09 12:50:24,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:24,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044278511] [2020-11-09 12:50:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:24,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044278511] [2020-11-09 12:50:24,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:24,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:50:24,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651647268] [2020-11-09 12:50:24,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:50:24,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:24,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:50:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:24,858 INFO L87 Difference]: Start difference. First operand 134 states and 326 transitions. Second operand 3 states. [2020-11-09 12:50:24,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:24,867 INFO L93 Difference]: Finished difference Result 128 states and 307 transitions. [2020-11-09 12:50:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:50:24,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 12:50:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:24,869 INFO L225 Difference]: With dead ends: 128 [2020-11-09 12:50:24,869 INFO L226 Difference]: Without dead ends: 128 [2020-11-09 12:50:24,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-09 12:50:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-09 12:50:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-09 12:50:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 307 transitions. [2020-11-09 12:50:24,885 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 307 transitions. Word has length 11 [2020-11-09 12:50:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:24,885 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 307 transitions. [2020-11-09 12:50:24,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:50:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 307 transitions. [2020-11-09 12:50:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:50:24,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:24,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:24,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:50:24,892 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1501954764, now seen corresponding path program 1 times [2020-11-09 12:50:24,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:24,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5351479] [2020-11-09 12:50:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:24,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5351479] [2020-11-09 12:50:24,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:24,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:50:24,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81113701] [2020-11-09 12:50:24,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:24,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:24,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:24,972 INFO L87 Difference]: Start difference. First operand 128 states and 307 transitions. Second operand 4 states. [2020-11-09 12:50:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:25,005 INFO L93 Difference]: Finished difference Result 146 states and 340 transitions. [2020-11-09 12:50:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:25,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:50:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:25,006 INFO L225 Difference]: With dead ends: 146 [2020-11-09 12:50:25,006 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 12:50:25,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 12:50:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 12:50:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 12:50:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-09 12:50:25,017 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-11-09 12:50:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:25,018 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-09 12:50:25,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-09 12:50:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:50:25,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:25,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:25,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:50:25,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:25,025 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 1 times [2020-11-09 12:50:25,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:25,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258782430] [2020-11-09 12:50:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:25,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258782430] [2020-11-09 12:50:25,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:25,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:50:25,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904120646] [2020-11-09 12:50:25,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:25,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:25,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:25,086 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-11-09 12:50:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:25,124 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-09 12:50:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:50:25,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:50:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:25,125 INFO L225 Difference]: With dead ends: 99 [2020-11-09 12:50:25,126 INFO L226 Difference]: Without dead ends: 77 [2020-11-09 12:50:25,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-09 12:50:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-09 12:50:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-09 12:50:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-11-09 12:50:25,130 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-11-09 12:50:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:25,131 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-11-09 12:50:25,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-11-09 12:50:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:50:25,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:25,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:25,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:50:25,132 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-11-09 12:50:25,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:25,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325384359] [2020-11-09 12:50:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:25,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325384359] [2020-11-09 12:50:25,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:25,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:25,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152166207] [2020-11-09 12:50:25,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:50:25,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:25,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:50:25,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:25,217 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 5 states. [2020-11-09 12:50:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:25,262 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-11-09 12:50:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:50:25,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:50:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:25,263 INFO L225 Difference]: With dead ends: 78 [2020-11-09 12:50:25,264 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 12:50:25,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:50:25,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 12:50:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 12:50:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 12:50:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-09 12:50:25,267 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-11-09 12:50:25,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:25,268 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-09 12:50:25,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:50:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-09 12:50:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:50:25,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:25,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:25,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:50:25,270 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:25,270 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-11-09 12:50:25,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:25,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107248903] [2020-11-09 12:50:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:25,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107248903] [2020-11-09 12:50:25,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:25,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:50:25,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631777053] [2020-11-09 12:50:25,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:50:25,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:25,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:50:25,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:50:25,331 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 6 states. [2020-11-09 12:50:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:25,394 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-09 12:50:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:50:25,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:50:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:25,396 INFO L225 Difference]: With dead ends: 60 [2020-11-09 12:50:25,396 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 12:50:25,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:50:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 12:50:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 12:50:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 12:50:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-09 12:50:25,400 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-09 12:50:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:25,400 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-09 12:50:25,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:50:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-09 12:50:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:50:25,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:25,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:25,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:50:25,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-11-09 12:50:25,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:25,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135004521] [2020-11-09 12:50:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:25,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135004521] [2020-11-09 12:50:25,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:25,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:25,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2409546] [2020-11-09 12:50:25,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:25,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:25,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:25,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:25,467 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-09 12:50:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:25,484 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-09 12:50:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:25,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:50:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:25,484 INFO L225 Difference]: With dead ends: 53 [2020-11-09 12:50:25,484 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:50:25,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:50:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:50:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:50:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:50:25,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:50:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:25,486 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:50:25,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:50:25,486 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:50:25,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:50:25,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:50:25 BasicIcfg [2020-11-09 12:50:25,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:50:25,492 INFO L168 Benchmark]: Toolchain (without parser) took 8444.65 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 135.3 MB in the beginning and 73.7 MB in the end (delta: 61.6 MB). Peak memory consumption was 94.5 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:25,493 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:50:25,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 943.99 ms. Allocated memory is still 161.5 MB. Free memory was 134.7 MB in the beginning and 134.5 MB in the end (delta: 185.1 kB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:25,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.61 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 132.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:25,495 INFO L168 Benchmark]: Boogie Preprocessor took 59.73 ms. Allocated memory is still 161.5 MB. Free memory was 132.3 MB in the beginning and 131.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:25,495 INFO L168 Benchmark]: RCFGBuilder took 630.72 ms. Allocated memory is still 161.5 MB. Free memory was 131.1 MB in the beginning and 109.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:25,496 INFO L168 Benchmark]: TraceAbstraction took 6699.38 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 109.1 MB in the beginning and 73.7 MB in the end (delta: 35.4 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:25,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 943.99 ms. Allocated memory is still 161.5 MB. Free memory was 134.7 MB in the beginning and 134.5 MB in the end (delta: 185.1 kB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 96.61 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 132.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.73 ms. Allocated memory is still 161.5 MB. Free memory was 132.3 MB in the beginning and 131.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 630.72 ms. Allocated memory is still 161.5 MB. Free memory was 131.1 MB in the beginning and 109.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6699.38 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 109.1 MB in the beginning and 73.7 MB in the end (delta: 35.4 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1039 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 89 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - 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: 6.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 176 SDtfs, 132 SDslu, 185 SDs, 0 SdLazy, 114 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...