/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:51:38,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:51:38,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:51:38,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:51:38,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:51:38,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:51:38,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:51:38,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:51:38,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:51:38,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:51:38,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:51:38,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:51:38,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:51:38,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:51:38,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:51:38,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:51:38,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:51:38,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:51:38,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:51:38,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:51:38,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:51:38,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:51:38,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:51:38,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:51:38,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 14:51:38,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 14:51:38,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 14:51:38,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 14:51:38,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 14:51:38,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 14:51:38,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:51:38,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:51:38,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:51:38,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:51:38,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:51:38,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:51:38,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:51:38,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:51:38,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:51:38,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:51:38,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:51:38,469 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.epf [2021-01-20 14:51:38,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:51:38,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:51:38,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:51:38,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:51:38,518 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:51:38,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:51:38,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:51:38,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:51:38,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:51:38,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:51:38,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:51:38,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:51:38,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:51:38,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:51:38,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:51:38,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:51:38,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:51:38,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:51:38,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:51:38,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:51:38,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:51:38,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:51:38,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:51:38,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:51:38,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:51:38,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:51:38,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:51:38,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:51:38,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:51:38,525 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:51:38,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:51:38,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:51:38,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:51:38,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:51:38,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:51:38,927 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:51:38,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2021-01-20 14:51:39,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a5095ab/0b28115fee4d49faa63f0bf0cfd7b7c7/FLAGb92ad98ae [2021-01-20 14:51:39,670 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:51:39,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2021-01-20 14:51:39,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a5095ab/0b28115fee4d49faa63f0bf0cfd7b7c7/FLAGb92ad98ae [2021-01-20 14:51:39,954 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a5095ab/0b28115fee4d49faa63f0bf0cfd7b7c7 [2021-01-20 14:51:39,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:51:39,961 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:51:39,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:51:39,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:51:39,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:51:39,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:51:39" (1/1) ... [2021-01-20 14:51:39,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e91731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:39, skipping insertion in model container [2021-01-20 14:51:39,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:51:39" (1/1) ... [2021-01-20 14:51:39,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:51:40,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:51:40,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:51:40,603 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:51:40,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:51:40,779 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:51:40,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40 WrapperNode [2021-01-20 14:51:40,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:51:40,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:51:40,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:51:40,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:51:40,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:51:40,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:51:40,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:51:40,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:51:40,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (1/1) ... [2021-01-20 14:51:40,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:51:40,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:51:40,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:51:40,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:51:40,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (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 [2021-01-20 14:51:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:51:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:51:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:51:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:51:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:51:40,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:51:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:51:40,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:51:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:51:40,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:51:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:51:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:51:40,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:51:40,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:51:40,970 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:51:41,479 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:51:41,479 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:51:41,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:51:41 BoogieIcfgContainer [2021-01-20 14:51:41,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:51:41,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:51:41,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:51:41,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:51:41,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:51:39" (1/3) ... [2021-01-20 14:51:41,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56aff605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:51:41, skipping insertion in model container [2021-01-20 14:51:41,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:51:40" (2/3) ... [2021-01-20 14:51:41,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56aff605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:51:41, skipping insertion in model container [2021-01-20 14:51:41,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:51:41" (3/3) ... [2021-01-20 14:51:41,491 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2021-01-20 14:51:41,507 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:51:41,508 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:51:41,511 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:51:41,512 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:51:41,546 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,549 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,563 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,564 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,567 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:51:41,570 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:51:41,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:51:41,608 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:51:41,608 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:51:41,608 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:51:41,608 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:51:41,608 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:51:41,608 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:51:41,609 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:51:41,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:51:41,621 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 14:51:42,530 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) [2021-01-20 14:51:42,574 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) [2021-01-20 14:51:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 14:51:42,623 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:42,624 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] [2021-01-20 14:51:42,625 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1266406659, now seen corresponding path program 1 times [2021-01-20 14:51:42,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:42,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395816560] [2021-01-20 14:51:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:43,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395816560] [2021-01-20 14:51:43,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:43,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:51:43,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066413946] [2021-01-20 14:51:43,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:51:43,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:43,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:51:43,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:51:43,225 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) [2021-01-20 14:51:43,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:43,669 INFO L93 Difference]: Finished difference Result 11318 states and 39237 transitions. [2021-01-20 14:51:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:51:43,672 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 [2021-01-20 14:51:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:43,732 INFO L225 Difference]: With dead ends: 11318 [2021-01-20 14:51:43,732 INFO L226 Difference]: Without dead ends: 4213 [2021-01-20 14:51:43,734 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:51:43,735 INFO L78 Accepts]: Start accepts. Automaton has 4213 states. Word has length 42 [2021-01-20 14:51:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:43,736 INFO L481 AbstractCegarLoop]: Abstraction has 4213 states. [2021-01-20 14:51:43,737 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) [2021-01-20 14:51:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states. [2021-01-20 14:51:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:51:43,753 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:43,754 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] [2021-01-20 14:51:43,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:51:43,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:43,755 INFO L82 PathProgramCache]: Analyzing trace with hash 429548758, now seen corresponding path program 1 times [2021-01-20 14:51:43,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:43,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297073628] [2021-01-20 14:51:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:43,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297073628] [2021-01-20 14:51:43,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:43,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:51:43,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778611068] [2021-01-20 14:51:43,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:51:43,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:43,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:51:43,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:51:43,959 INFO L87 Difference]: Start difference. First operand 4213 states. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:51:44,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:44,567 INFO L93 Difference]: Finished difference Result 6334 states and 21196 transitions. [2021-01-20 14:51:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:51:44,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 14:51:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:44,598 INFO L225 Difference]: With dead ends: 6334 [2021-01-20 14:51:44,598 INFO L226 Difference]: Without dead ends: 3115 [2021-01-20 14:51:44,600 INFO L769 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 [2021-01-20 14:51:44,600 INFO L78 Accepts]: Start accepts. Automaton has 3115 states. Word has length 45 [2021-01-20 14:51:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:44,602 INFO L481 AbstractCegarLoop]: Abstraction has 3115 states. [2021-01-20 14:51:44,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:51:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states. [2021-01-20 14:51:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:51:44,616 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:44,616 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] [2021-01-20 14:51:44,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:51:44,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1422766975, now seen corresponding path program 1 times [2021-01-20 14:51:44,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:44,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297578351] [2021-01-20 14:51:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297578351] [2021-01-20 14:51:44,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:44,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:51:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057536657] [2021-01-20 14:51:44,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:51:44,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:44,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:51:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:51:44,882 INFO L87 Difference]: Start difference. First operand 3115 states. 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) [2021-01-20 14:51:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:45,132 INFO L93 Difference]: Finished difference Result 3903 states and 12811 transitions. [2021-01-20 14:51:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:51:45,133 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 [2021-01-20 14:51:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:45,156 INFO L225 Difference]: With dead ends: 3903 [2021-01-20 14:51:45,156 INFO L226 Difference]: Without dead ends: 2811 [2021-01-20 14:51:45,156 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:51:45,157 INFO L78 Accepts]: Start accepts. Automaton has 2811 states. Word has length 47 [2021-01-20 14:51:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:45,157 INFO L481 AbstractCegarLoop]: Abstraction has 2811 states. [2021-01-20 14:51:45,157 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) [2021-01-20 14:51:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states. [2021-01-20 14:51:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:51:45,197 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:45,197 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] [2021-01-20 14:51:45,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:51:45,198 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:45,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1775856222, now seen corresponding path program 1 times [2021-01-20 14:51:45,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:45,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439264569] [2021-01-20 14:51:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:45,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439264569] [2021-01-20 14:51:45,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:45,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:51:45,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559725292] [2021-01-20 14:51:45,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:51:45,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:51:45,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:51:45,401 INFO L87 Difference]: Start difference. First operand 2811 states. 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) [2021-01-20 14:51:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:45,672 INFO L93 Difference]: Finished difference Result 2835 states and 9001 transitions. [2021-01-20 14:51:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:51:45,673 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 [2021-01-20 14:51:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:45,687 INFO L225 Difference]: With dead ends: 2835 [2021-01-20 14:51:45,688 INFO L226 Difference]: Without dead ends: 1935 [2021-01-20 14:51:45,688 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:51:45,688 INFO L78 Accepts]: Start accepts. Automaton has 1935 states. Word has length 48 [2021-01-20 14:51:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:45,689 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states. [2021-01-20 14:51:45,689 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) [2021-01-20 14:51:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states. [2021-01-20 14:51:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:51:45,696 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:45,697 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] [2021-01-20 14:51:45,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:51:45,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:45,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2020113217, now seen corresponding path program 1 times [2021-01-20 14:51:45,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:45,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702159965] [2021-01-20 14:51:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:45,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702159965] [2021-01-20 14:51:45,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:45,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:51:45,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304377437] [2021-01-20 14:51:45,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:51:45,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:45,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:51:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:51:45,881 INFO L87 Difference]: Start difference. First operand 1935 states. 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) [2021-01-20 14:51:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:46,230 INFO L93 Difference]: Finished difference Result 1449 states and 4351 transitions. [2021-01-20 14:51:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:51:46,231 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 [2021-01-20 14:51:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:46,239 INFO L225 Difference]: With dead ends: 1449 [2021-01-20 14:51:46,239 INFO L226 Difference]: Without dead ends: 981 [2021-01-20 14:51:46,240 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:51:46,240 INFO L78 Accepts]: Start accepts. Automaton has 981 states. Word has length 50 [2021-01-20 14:51:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:46,241 INFO L481 AbstractCegarLoop]: Abstraction has 981 states. [2021-01-20 14:51:46,241 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) [2021-01-20 14:51:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states. [2021-01-20 14:51:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:51:46,246 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:46,246 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] [2021-01-20 14:51:46,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:51:46,247 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash -54775455, now seen corresponding path program 1 times [2021-01-20 14:51:46,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:46,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066242083] [2021-01-20 14:51:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:46,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066242083] [2021-01-20 14:51:46,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:46,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:51:46,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309419595] [2021-01-20 14:51:46,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:51:46,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:46,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:51:46,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:51:46,422 INFO L87 Difference]: Start difference. First operand 981 states. 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) [2021-01-20 14:51:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:46,582 INFO L93 Difference]: Finished difference Result 1424 states and 4153 transitions. [2021-01-20 14:51:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:51:46,583 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 [2021-01-20 14:51:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:46,590 INFO L225 Difference]: With dead ends: 1424 [2021-01-20 14:51:46,591 INFO L226 Difference]: Without dead ends: 831 [2021-01-20 14:51:46,591 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:51:46,591 INFO L78 Accepts]: Start accepts. Automaton has 831 states. Word has length 54 [2021-01-20 14:51:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:46,592 INFO L481 AbstractCegarLoop]: Abstraction has 831 states. [2021-01-20 14:51:46,593 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) [2021-01-20 14:51:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states. [2021-01-20 14:51:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:51:46,596 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:46,597 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] [2021-01-20 14:51:46,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:51:46,597 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:46,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:46,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1436109045, now seen corresponding path program 2 times [2021-01-20 14:51:46,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:46,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680002212] [2021-01-20 14:51:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:46,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680002212] [2021-01-20 14:51:46,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:46,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:51:46,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680032371] [2021-01-20 14:51:46,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:51:46,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:51:46,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:51:46,801 INFO L87 Difference]: Start difference. First operand 831 states. 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) [2021-01-20 14:51:46,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:46,922 INFO L93 Difference]: Finished difference Result 1354 states and 3902 transitions. [2021-01-20 14:51:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-20 14:51:46,923 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 [2021-01-20 14:51:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:46,929 INFO L225 Difference]: With dead ends: 1354 [2021-01-20 14:51:46,929 INFO L226 Difference]: Without dead ends: 771 [2021-01-20 14:51:46,930 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:51:46,930 INFO L78 Accepts]: Start accepts. Automaton has 771 states. Word has length 54 [2021-01-20 14:51:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:46,931 INFO L481 AbstractCegarLoop]: Abstraction has 771 states. [2021-01-20 14:51:46,931 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) [2021-01-20 14:51:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states. [2021-01-20 14:51:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:51:46,934 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:51:46,934 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] [2021-01-20 14:51:46,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:51:46,935 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:51:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:51:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1423150337, now seen corresponding path program 3 times [2021-01-20 14:51:46,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:51:46,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130622124] [2021-01-20 14:51:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:51:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:51:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:51:47,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130622124] [2021-01-20 14:51:47,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:51:47,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:51:47,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072724058] [2021-01-20 14:51:47,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:51:47,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:51:47,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:51:47,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:51:47,083 INFO L87 Difference]: Start difference. First operand 771 states. 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) [2021-01-20 14:51:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:51:47,180 INFO L93 Difference]: Finished difference Result 663 states and 1855 transitions. [2021-01-20 14:51:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:51:47,181 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 [2021-01-20 14:51:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:51:47,181 INFO L225 Difference]: With dead ends: 663 [2021-01-20 14:51:47,181 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:51:47,182 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:51:47,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 54 [2021-01-20 14:51:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:51:47,182 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:51:47,183 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) [2021-01-20 14:51:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:51:47,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:51:47,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:51:47,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:51:47 BasicIcfg [2021-01-20 14:51:47,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:51:47,191 INFO L168 Benchmark]: Toolchain (without parser) took 7229.05 ms. Allocated memory was 302.0 MB in the beginning and 641.7 MB in the end (delta: 339.7 MB). Free memory was 276.5 MB in the beginning and 444.9 MB in the end (delta: -168.4 MB). Peak memory consumption was 172.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:51:47,192 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:51:47,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.80 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.4 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-01-20 14:51:47,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.93 ms. Allocated memory is still 302.0 MB. Free memory was 245.4 MB in the beginning and 243.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:51:47,194 INFO L168 Benchmark]: Boogie Preprocessor took 55.00 ms. Allocated memory is still 302.0 MB. Free memory was 243.5 MB in the beginning and 285.1 MB in the end (delta: -41.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. [2021-01-20 14:51:47,195 INFO L168 Benchmark]: RCFGBuilder took 589.73 ms. Allocated memory is still 302.0 MB. Free memory was 285.1 MB in the beginning and 261.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:51:47,196 INFO L168 Benchmark]: TraceAbstraction took 5705.11 ms. Allocated memory was 302.0 MB in the beginning and 641.7 MB in the end (delta: 339.7 MB). Free memory was 261.9 MB in the beginning and 444.9 MB in the end (delta: -183.0 MB). Peak memory consumption was 157.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:51:47,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 813.80 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.4 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.93 ms. Allocated memory is still 302.0 MB. Free memory was 245.4 MB in the beginning and 243.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 55.00 ms. Allocated memory is still 302.0 MB. Free memory was 243.5 MB in the beginning and 285.1 MB in the end (delta: -41.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 589.73 ms. Allocated memory is still 302.0 MB. Free memory was 285.1 MB in the beginning and 261.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5705.11 ms. Allocated memory was 302.0 MB in the beginning and 641.7 MB in the end (delta: 339.7 MB). Free memory was 261.9 MB in the beginning and 444.9 MB in the end (delta: -183.0 MB). Peak memory consumption was 157.8 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: 5.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 747 SDtfs, 970 SDslu, 2501 SDs, 0 SdLazy, 310 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 45628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...