/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-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:23:08,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:23:08,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:23:08,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:23:08,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:23:08,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:23:08,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:23:08,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:23:08,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:23:08,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:23:08,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:23:08,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:23:08,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:23:08,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:23:08,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:23:08,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:23:08,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:23:08,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:23:08,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:23:08,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:23:08,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:23:08,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:23:08,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:23:08,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:23:08,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 12:23:08,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 12:23:08,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 12:23:08,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 12:23:08,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 12:23:08,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 12:23:08,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:23:08,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:23:08,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:23:08,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:23:08,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:23:08,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:23:08,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:23:08,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:23:08,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:23:08,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:23:08,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:23:08,601 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-New_States.epf [2020-11-12 12:23:08,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:23:08,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:23:08,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:23:08,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:23:08,634 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:23:08,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:23:08,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:23:08,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:23:08,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:23:08,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:23:08,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:23:08,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:23:08,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:23:08,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:23:08,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:23:08,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:23:08,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:23:08,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:23:08,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:23:08,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:23:08,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:23:08,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:23:08,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:23:08,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:23:08,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:23:08,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:23:08,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:23:08,640 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:23:08,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:23:08,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:23:08,640 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:23:09,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:23:09,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:23:09,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:23:09,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:23:09,098 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:23:09,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-11-12 12:23:09,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e2276276/908edc7e62ba4186bcd910ee19138e26/FLAG0dd01005a [2020-11-12 12:23:09,877 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:23:09,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-11-12 12:23:09,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e2276276/908edc7e62ba4186bcd910ee19138e26/FLAG0dd01005a [2020-11-12 12:23:10,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e2276276/908edc7e62ba4186bcd910ee19138e26 [2020-11-12 12:23:10,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:23:10,112 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:23:10,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:23:10,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:23:10,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:23:10,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9e77e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10, skipping insertion in model container [2020-11-12 12:23:10,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:23:10,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:23:10,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:23:10,621 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:23:10,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:23:10,820 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:23:10,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10 WrapperNode [2020-11-12 12:23:10,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:23:10,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:23:10,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:23:10,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:23:10,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:23:10,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:23:10,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:23:10,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:23:10,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... [2020-11-12 12:23:10,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:23:10,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:23:10,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:23:10,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:23:10,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:23:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:23:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:23:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:23:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:23:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:23:11,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:23:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:23:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:23:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:23:11,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:23:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:23:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:23:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:23:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:23:11,016 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:23:11,440 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:23:11,441 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:23:11,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:23:11 BoogieIcfgContainer [2020-11-12 12:23:11,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:23:11,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:23:11,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:23:11,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:23:11,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:23:10" (1/3) ... [2020-11-12 12:23:11,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549a9abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:23:11, skipping insertion in model container [2020-11-12 12:23:11,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:10" (2/3) ... [2020-11-12 12:23:11,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549a9abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:23:11, skipping insertion in model container [2020-11-12 12:23:11,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:23:11" (3/3) ... [2020-11-12 12:23:11,453 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-11-12 12:23:11,469 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:23:11,470 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:23:11,474 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:23:11,475 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:23:11,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,513 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,513 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,526 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,526 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,532 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,532 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:11,539 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:23:11,552 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:23:11,578 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:23:11,578 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:23:11,578 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:23:11,579 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:23:11,579 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:23:11,579 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:23:11,579 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:23:11,579 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:23:11,593 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 12:23:12,446 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:13,324 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 875ms [2020-11-12 12:23:13,359 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:13,463 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34448 states, 31503 states have (on average 1.1954734469733042) internal successors, (37661), 34447 states have internal predecessors, (37661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 34448 states, 31503 states have (on average 1.1954734469733042) internal successors, (37661), 34447 states have internal predecessors, (37661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:23:13,537 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:13,539 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:13,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:13,677 INFO L82 PathProgramCache]: Analyzing trace with hash 143249805, now seen corresponding path program 1 times [2020-11-12 12:23:13,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:13,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453058441] [2020-11-12 12:23:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:14,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453058441] [2020-11-12 12:23:14,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:14,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:23:14,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283882607] [2020-11-12 12:23:14,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:23:14,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:14,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:23:14,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:23:14,239 INFO L87 Difference]: Start difference. First operand has 34448 states, 31503 states have (on average 1.1954734469733042) internal successors, (37661), 34447 states have internal predecessors, (37661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:14,548 INFO L93 Difference]: Finished difference Result 13976 states and 16024 transitions. [2020-11-12 12:23:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:23:14,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-12 12:23:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:14,612 INFO L225 Difference]: With dead ends: 13976 [2020-11-12 12:23:14,612 INFO L226 Difference]: Without dead ends: 4768 [2020-11-12 12:23:14,615 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:23:14,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2020-11-12 12:23:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 4768. [2020-11-12 12:23:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4523 states have (on average 1.3338492151227062) internal successors, (6033), 4767 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 6033 transitions. [2020-11-12 12:23:14,839 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 6033 transitions. Word has length 42 [2020-11-12 12:23:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:14,840 INFO L481 AbstractCegarLoop]: Abstraction has 4768 states and 6033 transitions. [2020-11-12 12:23:14,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 6033 transitions. [2020-11-12 12:23:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:23:14,847 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:14,847 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:14,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:23:14,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:14,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1163284558, now seen corresponding path program 1 times [2020-11-12 12:23:14,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:14,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189749746] [2020-11-12 12:23:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:15,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189749746] [2020-11-12 12:23:15,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:15,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:23:15,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371587114] [2020-11-12 12:23:15,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:23:15,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:15,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:23:15,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:23:15,034 INFO L87 Difference]: Start difference. First operand 4768 states and 6033 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:15,277 INFO L93 Difference]: Finished difference Result 6227 states and 8001 transitions. [2020-11-12 12:23:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:23:15,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 12:23:15,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:15,291 INFO L225 Difference]: With dead ends: 6227 [2020-11-12 12:23:15,292 INFO L226 Difference]: Without dead ends: 2679 [2020-11-12 12:23:15,293 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:23:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2020-11-12 12:23:15,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2679. [2020-11-12 12:23:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2539 states have (on average 1.2760929499803073) internal successors, (3240), 2678 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 3240 transitions. [2020-11-12 12:23:15,387 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 3240 transitions. Word has length 44 [2020-11-12 12:23:15,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:15,388 INFO L481 AbstractCegarLoop]: Abstraction has 2679 states and 3240 transitions. [2020-11-12 12:23:15,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 3240 transitions. [2020-11-12 12:23:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:23:15,396 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:15,396 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:15,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:23:15,397 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:15,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1560628649, now seen corresponding path program 1 times [2020-11-12 12:23:15,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:15,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101311078] [2020-11-12 12:23:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:15,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101311078] [2020-11-12 12:23:15,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:15,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:23:15,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239779488] [2020-11-12 12:23:15,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:23:15,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:15,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:23:15,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:23:15,552 INFO L87 Difference]: Start difference. First operand 2679 states and 3240 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:15,676 INFO L93 Difference]: Finished difference Result 3078 states and 3546 transitions. [2020-11-12 12:23:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:23:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-12 12:23:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:15,689 INFO L225 Difference]: With dead ends: 3078 [2020-11-12 12:23:15,689 INFO L226 Difference]: Without dead ends: 2510 [2020-11-12 12:23:15,689 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:23:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2020-11-12 12:23:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2510. [2020-11-12 12:23:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2378 states have (on average 1.2514718250630783) internal successors, (2976), 2509 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 2976 transitions. [2020-11-12 12:23:15,776 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 2976 transitions. Word has length 47 [2020-11-12 12:23:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:15,777 INFO L481 AbstractCegarLoop]: Abstraction has 2510 states and 2976 transitions. [2020-11-12 12:23:15,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 2976 transitions. [2020-11-12 12:23:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:23:15,782 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:15,782 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:15,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:23:15,783 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:15,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1321451508, now seen corresponding path program 1 times [2020-11-12 12:23:15,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:15,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494092835] [2020-11-12 12:23:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:15,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494092835] [2020-11-12 12:23:15,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:15,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:23:15,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601527531] [2020-11-12 12:23:15,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:23:15,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:23:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:23:15,969 INFO L87 Difference]: Start difference. First operand 2510 states and 2976 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:16,129 INFO L93 Difference]: Finished difference Result 2394 states and 2682 transitions. [2020-11-12 12:23:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:23:16,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-11-12 12:23:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:16,139 INFO L225 Difference]: With dead ends: 2394 [2020-11-12 12:23:16,139 INFO L226 Difference]: Without dead ends: 1713 [2020-11-12 12:23:16,140 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:23:16,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2020-11-12 12:23:16,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2020-11-12 12:23:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1623 states have (on average 1.1663585951940851) internal successors, (1893), 1712 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 1893 transitions. [2020-11-12 12:23:16,189 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 1893 transitions. Word has length 48 [2020-11-12 12:23:16,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:16,189 INFO L481 AbstractCegarLoop]: Abstraction has 1713 states and 1893 transitions. [2020-11-12 12:23:16,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 1893 transitions. [2020-11-12 12:23:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:23:16,194 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:16,194 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:16,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:23:16,194 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:16,195 INFO L82 PathProgramCache]: Analyzing trace with hash 33663821, now seen corresponding path program 1 times [2020-11-12 12:23:16,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:16,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442187757] [2020-11-12 12:23:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:16,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442187757] [2020-11-12 12:23:16,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:16,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:23:16,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351858086] [2020-11-12 12:23:16,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:23:16,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:16,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:23:16,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:23:16,379 INFO L87 Difference]: Start difference. First operand 1713 states and 1893 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:16,586 INFO L93 Difference]: Finished difference Result 1192 states and 1273 transitions. [2020-11-12 12:23:16,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:23:16,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-12 12:23:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:16,590 INFO L225 Difference]: With dead ends: 1192 [2020-11-12 12:23:16,591 INFO L226 Difference]: Without dead ends: 570 [2020-11-12 12:23:16,591 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:23:16,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-11-12 12:23:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2020-11-12 12:23:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 543 states have (on average 1.0699815837937385) internal successors, (581), 569 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 581 transitions. [2020-11-12 12:23:16,612 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 581 transitions. Word has length 50 [2020-11-12 12:23:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:16,612 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 581 transitions. [2020-11-12 12:23:16,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,613 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 581 transitions. [2020-11-12 12:23:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:23:16,616 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:16,617 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:16,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:23:16,617 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:16,618 INFO L82 PathProgramCache]: Analyzing trace with hash -178527541, now seen corresponding path program 1 times [2020-11-12 12:23:16,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:16,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941801059] [2020-11-12 12:23:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:16,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941801059] [2020-11-12 12:23:16,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:16,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:23:16,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779372407] [2020-11-12 12:23:16,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:23:16,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:16,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:23:16,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:23:16,792 INFO L87 Difference]: Start difference. First operand 570 states and 581 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:16,874 INFO L93 Difference]: Finished difference Result 934 states and 942 transitions. [2020-11-12 12:23:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 12:23:16,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-12 12:23:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:16,880 INFO L225 Difference]: With dead ends: 934 [2020-11-12 12:23:16,880 INFO L226 Difference]: Without dead ends: 519 [2020-11-12 12:23:16,881 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-12 12:23:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-11-12 12:23:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2020-11-12 12:23:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 492 states have (on average 1.0528455284552845) internal successors, (518), 518 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 518 transitions. [2020-11-12 12:23:16,892 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 518 transitions. Word has length 54 [2020-11-12 12:23:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:16,893 INFO L481 AbstractCegarLoop]: Abstraction has 519 states and 518 transitions. [2020-11-12 12:23:16,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 518 transitions. [2020-11-12 12:23:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:23:16,894 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:16,894 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:16,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:23:16,895 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1453263537, now seen corresponding path program 2 times [2020-11-12 12:23:16,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:16,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827682719] [2020-11-12 12:23:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:17,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827682719] [2020-11-12 12:23:17,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:17,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:23:17,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976154799] [2020-11-12 12:23:17,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:23:17,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:17,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:23:17,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:23:17,007 INFO L87 Difference]: Start difference. First operand 519 states and 518 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:17,086 INFO L93 Difference]: Finished difference Result 411 states and 410 transitions. [2020-11-12 12:23:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:23:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-12 12:23:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:17,087 INFO L225 Difference]: With dead ends: 411 [2020-11-12 12:23:17,087 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:23:17,087 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:23:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:23:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:23:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:23:17,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-12 12:23:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:17,088 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:23:17,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:23:17,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:23:17,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:23:17,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:23:17 BasicIcfg [2020-11-12 12:23:17,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:23:17,098 INFO L168 Benchmark]: Toolchain (without parser) took 6990.00 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 272.7 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 127.9 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:17,098 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 308.3 MB. Free memory is still 291.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:23:17,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.07 ms. Allocated memory is still 308.3 MB. Free memory was 272.0 MB in the beginning and 268.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:17,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.48 ms. Allocated memory is still 308.3 MB. Free memory was 268.9 MB in the beginning and 266.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:17,101 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 308.3 MB. Free memory was 266.9 MB in the beginning and 265.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:23:17,102 INFO L168 Benchmark]: RCFGBuilder took 521.68 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 285.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:17,103 INFO L168 Benchmark]: TraceAbstraction took 5650.09 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 285.1 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 140.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:17,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 308.3 MB. Free memory is still 291.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 707.07 ms. Allocated memory is still 308.3 MB. Free memory was 272.0 MB in the beginning and 268.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 67.48 ms. Allocated memory is still 308.3 MB. Free memory was 268.9 MB in the beginning and 266.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 308.3 MB. Free memory was 266.9 MB in the beginning and 265.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 521.68 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 285.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5650.09 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 285.1 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 140.4 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: 7, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 461 SDtfs, 691 SDslu, 1678 SDs, 0 SdLazy, 182 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34448occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 41700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...