/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 18:13:17,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 18:13:17,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 18:13:17,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 18:13:17,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 18:13:17,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 18:13:17,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 18:13:17,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 18:13:17,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 18:13:17,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 18:13:17,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 18:13:17,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 18:13:17,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 18:13:17,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 18:13:17,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 18:13:17,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 18:13:17,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 18:13:17,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 18:13:17,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 18:13:17,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 18:13:17,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 18:13:17,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 18:13:17,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 18:13:17,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 18:13:17,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 18:13:17,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 18:13:17,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 18:13:17,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 18:13:17,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 18:13:17,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 18:13:17,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 18:13:17,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 18:13:17,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 18:13:17,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 18:13:17,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 18:13:17,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 18:13:17,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 18:13:17,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 18:13:17,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 18:13:17,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 18:13:17,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 18:13:17,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2021-01-20 18:13:17,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 18:13:17,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 18:13:17,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 18:13:17,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 18:13:17,670 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 18:13:17,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 18:13:17,672 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 18:13:17,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 18:13:17,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 18:13:17,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 18:13:17,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 18:13:17,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 18:13:17,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 18:13:17,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 18:13:17,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 18:13:17,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 18:13:17,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 18:13:17,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 18:13:17,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 18:13:17,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 18:13:17,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 18:13:17,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 18:13:17,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 18:13:17,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 18:13:17,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 18:13:17,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 18:13:17,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 18:13:17,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 18:13:17,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 18:13:17,678 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 18:13:17,678 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 18:13:17,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 18:13:18,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 18:13:18,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 18:13:18,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 18:13:18,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 18:13:18,096 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 18:13:18,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-01-20 18:13:18,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63be050c/50ff9dfa280547eb9dfa1d19c214a40d/FLAG8fda5f233 [2021-01-20 18:13:18,847 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 18:13:18,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-01-20 18:13:18,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63be050c/50ff9dfa280547eb9dfa1d19c214a40d/FLAG8fda5f233 [2021-01-20 18:13:19,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63be050c/50ff9dfa280547eb9dfa1d19c214a40d [2021-01-20 18:13:19,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 18:13:19,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 18:13:19,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 18:13:19,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 18:13:19,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 18:13:19,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396a6cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19, skipping insertion in model container [2021-01-20 18:13:19,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 18:13:19,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 18:13:19,492 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-01-20 18:13:19,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 18:13:19,673 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 18:13:19,693 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-01-20 18:13:19,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 18:13:19,828 INFO L208 MainTranslator]: Completed translation [2021-01-20 18:13:19,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19 WrapperNode [2021-01-20 18:13:19,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 18:13:19,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 18:13:19,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 18:13:19,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 18:13:19,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 18:13:19,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 18:13:19,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 18:13:19,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 18:13:19,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (1/1) ... [2021-01-20 18:13:19,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 18:13:19,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 18:13:19,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 18:13:19,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 18:13:19,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (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 18:13:20,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-20 18:13:20,077 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-01-20 18:13:20,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-01-20 18:13:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-01-20 18:13:20,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-01-20 18:13:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 18:13:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 18:13:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 18:13:20,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 18:13:20,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 18:13:20,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 18:13:20,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 18:13:20,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 18:13:20,081 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 18:13:20,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 18:13:20,742 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-20 18:13:20,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 06:13:20 BoogieIcfgContainer [2021-01-20 18:13:20,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 18:13:20,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 18:13:20,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 18:13:20,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 18:13:20,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 06:13:19" (1/3) ... [2021-01-20 18:13:20,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cf6c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 06:13:20, skipping insertion in model container [2021-01-20 18:13:20,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 06:13:19" (2/3) ... [2021-01-20 18:13:20,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cf6c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 06:13:20, skipping insertion in model container [2021-01-20 18:13:20,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 06:13:20" (3/3) ... [2021-01-20 18:13:20,758 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-01-20 18:13:20,775 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 18:13:20,775 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 18:13:20,780 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-20 18:13:20,781 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 18:13:20,835 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,836 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,839 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,840 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,840 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,841 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,842 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,843 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,845 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,847 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,848 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,848 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,849 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,849 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,850 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,860 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,867 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,867 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,868 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,868 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,875 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,875 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,876 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,876 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,876 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,876 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 18:13:20,890 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-01-20 18:13:20,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-20 18:13:20,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 18:13:20,937 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 18:13:20,937 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 18:13:20,937 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 18:13:20,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 18:13:20,938 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 18:13:20,938 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 18:13:20,938 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 18:13:20,952 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 104 transitions, 230 flow [2021-01-20 18:13:21,073 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1975 states, 1971 states have (on average 3.0395738203957383) internal successors, (5991), 1974 states have internal predecessors, (5991), 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 18:13:21,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 1975 states, 1971 states have (on average 3.0395738203957383) internal successors, (5991), 1974 states have internal predecessors, (5991), 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 18:13:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-20 18:13:21,095 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:13:21,096 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] [2021-01-20 18:13:21,096 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:13:21,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:13:21,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1133918687, now seen corresponding path program 1 times [2021-01-20 18:13:21,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:13:21,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974890750] [2021-01-20 18:13:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:13:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:13:21,404 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 18:13:21,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974890750] [2021-01-20 18:13:21,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:13:21,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-20 18:13:21,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400840602] [2021-01-20 18:13:21,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-20 18:13:21,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:13:21,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-20 18:13:21,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 18:13:21,452 INFO L87 Difference]: Start difference. First operand has 1975 states, 1971 states have (on average 3.0395738203957383) internal successors, (5991), 1974 states have internal predecessors, (5991), 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 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 18:13:21,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:13:21,544 INFO L93 Difference]: Finished difference Result 1825 states and 4972 transitions. [2021-01-20 18:13:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-20 18:13:21,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2021-01-20 18:13:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:13:21,550 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-20 18:13:21,550 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 4972 transitions. Word has length 30 [2021-01-20 18:13:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:13:21,553 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 4972 transitions. [2021-01-20 18:13:21,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 18:13:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 4972 transitions. [2021-01-20 18:13:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-20 18:13:21,567 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:13:21,567 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] [2021-01-20 18:13:21,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 18:13:21,568 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:13:21,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:13:21,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1105289536, now seen corresponding path program 1 times [2021-01-20 18:13:21,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:13:21,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366294627] [2021-01-20 18:13:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:13:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:13:21,738 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 18:13:21,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366294627] [2021-01-20 18:13:21,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:13:21,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 18:13:21,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691157371] [2021-01-20 18:13:21,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 18:13:21,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:13:21,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 18:13:21,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:13:21,745 INFO L87 Difference]: Start difference. First operand 1825 states and 4972 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 18:13:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:13:21,844 INFO L93 Difference]: Finished difference Result 1894 states and 5007 transitions. [2021-01-20 18:13:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 18:13:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-01-20 18:13:21,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:13:21,847 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:13:21,848 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 5007 transitions. Word has length 30 [2021-01-20 18:13:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:13:21,848 INFO L481 AbstractCegarLoop]: Abstraction has 1894 states and 5007 transitions. [2021-01-20 18:13:21,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 18:13:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 5007 transitions. [2021-01-20 18:13:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-20 18:13:21,852 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:13:21,852 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] [2021-01-20 18:13:21,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 18:13:21,852 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:13:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:13:21,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1852740032, now seen corresponding path program 1 times [2021-01-20 18:13:21,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:13:21,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241581717] [2021-01-20 18:13:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:13:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:13:21,985 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 18:13:21,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241581717] [2021-01-20 18:13:21,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:13:21,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-20 18:13:21,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789305634] [2021-01-20 18:13:21,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-20 18:13:21,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:13:21,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-20 18:13:21,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:13:21,995 INFO L87 Difference]: Start difference. First operand 1894 states and 5007 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 18:13:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:13:22,048 INFO L93 Difference]: Finished difference Result 1606 states and 4202 transitions. [2021-01-20 18:13:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-20 18:13:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-01-20 18:13:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:13:22,050 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-20 18:13:22,050 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 4202 transitions. Word has length 33 [2021-01-20 18:13:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:13:22,051 INFO L481 AbstractCegarLoop]: Abstraction has 1606 states and 4202 transitions. [2021-01-20 18:13:22,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 18:13:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 4202 transitions. [2021-01-20 18:13:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-20 18:13:22,055 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:13:22,056 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] [2021-01-20 18:13:22,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 18:13:22,056 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:13:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:13:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash 146112481, now seen corresponding path program 1 times [2021-01-20 18:13:22,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:13:22,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735041896] [2021-01-20 18:13:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:13:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:13:22,124 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 18:13:22,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735041896] [2021-01-20 18:13:22,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:13:22,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-20 18:13:22,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527047] [2021-01-20 18:13:22,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-20 18:13:22,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:13:22,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-20 18:13:22,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-20 18:13:22,127 INFO L87 Difference]: Start difference. First operand 1606 states and 4202 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:13:22,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:13:22,223 INFO L93 Difference]: Finished difference Result 2092 states and 5642 transitions. [2021-01-20 18:13:22,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-20 18:13:22,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2021-01-20 18:13:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:13:22,225 INFO L769 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 [2021-01-20 18:13:22,225 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 5642 transitions. Word has length 38 [2021-01-20 18:13:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:13:22,226 INFO L481 AbstractCegarLoop]: Abstraction has 2092 states and 5642 transitions. [2021-01-20 18:13:22,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:13:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 5642 transitions. [2021-01-20 18:13:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-01-20 18:13:22,231 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 18:13:22,231 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] [2021-01-20 18:13:22,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 18:13:22,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 18:13:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 18:13:22,233 INFO L82 PathProgramCache]: Analyzing trace with hash -466754365, now seen corresponding path program 2 times [2021-01-20 18:13:22,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 18:13:22,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294784249] [2021-01-20 18:13:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 18:13:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 18:13:22,293 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 18:13:22,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294784249] [2021-01-20 18:13:22,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 18:13:22,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-20 18:13:22,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321790] [2021-01-20 18:13:22,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-20 18:13:22,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 18:13:22,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-20 18:13:22,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-20 18:13:22,296 INFO L87 Difference]: Start difference. First operand 2092 states and 5642 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:13:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 18:13:22,382 INFO L93 Difference]: Finished difference Result 2362 states and 6630 transitions. [2021-01-20 18:13:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-20 18:13:22,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2021-01-20 18:13:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 18:13:22,383 INFO L769 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 [2021-01-20 18:13:22,384 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 6630 transitions. Word has length 38 [2021-01-20 18:13:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 18:13:22,384 INFO L481 AbstractCegarLoop]: Abstraction has 2362 states and 6630 transitions. [2021-01-20 18:13:22,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 18:13:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 6630 transitions. [2021-01-20 18:13:22,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 18:13:22,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 18:13:22,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 06:13:22 BasicIcfg [2021-01-20 18:13:22,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 18:13:22,401 INFO L168 Benchmark]: Toolchain (without parser) took 3245.10 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 149.2 MB in the end (delta: 127.6 MB). Peak memory consumption was 128.4 MB. Max. memory is 16.0 GB. [2021-01-20 18:13:22,402 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 272.1 MB in the end (delta: 79.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 18:13:22,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.96 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 246.3 MB in the end (delta: 30.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 18:13:22,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.05 ms. Allocated memory is still 302.0 MB. Free memory was 246.3 MB in the beginning and 284.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-01-20 18:13:22,405 INFO L168 Benchmark]: Boogie Preprocessor took 77.64 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 18:13:22,405 INFO L168 Benchmark]: RCFGBuilder took 754.11 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 258.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-01-20 18:13:22,406 INFO L168 Benchmark]: TraceAbstraction took 1647.78 ms. Allocated memory is still 302.0 MB. Free memory was 257.2 MB in the beginning and 149.2 MB in the end (delta: 108.0 MB). Peak memory consumption was 109.1 MB. Max. memory is 16.0 GB. [2021-01-20 18:13:22,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 272.1 MB in the end (delta: 79.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 669.96 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 246.3 MB in the end (delta: 30.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 79.05 ms. Allocated memory is still 302.0 MB. Free memory was 246.3 MB in the beginning and 284.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 77.64 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 754.11 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 258.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1647.78 ms. Allocated memory is still 302.0 MB. Free memory was 257.2 MB in the beginning and 149.2 MB in the end (delta: 108.0 MB). Peak memory consumption was 109.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 594 SDtfs, 295 SDslu, 522 SDs, 0 SdLazy, 56 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2362occurred in iteration=5, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 6380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...