/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:42:49,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:42:49,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:42:49,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:42:49,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:42:49,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:42:49,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:42:49,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:42:49,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:42:49,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:42:49,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:42:49,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:42:49,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:42:49,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:42:49,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:42:49,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:42:49,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:42:49,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:42:49,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:42:49,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:42:49,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:42:49,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:42:49,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:42:49,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:42:49,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 12:42:49,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 12:42:49,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 12:42:49,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 12:42:49,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 12:42:49,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 12:42:49,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:42:49,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:42:49,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:42:49,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:42:49,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:42:49,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:42:49,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:42:49,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:42:49,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:42:49,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:42:49,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:42:49,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:42:49,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:42:49,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:42:49,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:42:49,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:42:49,872 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:42:49,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:42:49,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:42:49,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:42:49,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:42:49,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:42:49,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:42:49,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:42:49,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:42:49,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:42:49,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:42:49,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:42:49,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:42:49,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:42:49,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:42:49,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:42:49,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:42:49,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:42:49,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:42:49,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:42:49,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:42:49,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:42:49,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:42:49,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:42:49,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:42:49,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:42:50,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:42:50,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:42:50,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:42:50,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:42:50,359 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:42:50,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-11-09 12:42:50,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b498f4720/1140749ea23645fabcea7746294f75c9/FLAG9167c76fa [2020-11-09 12:42:51,332 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:42:51,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-11-09 12:42:51,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b498f4720/1140749ea23645fabcea7746294f75c9/FLAG9167c76fa [2020-11-09 12:42:51,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b498f4720/1140749ea23645fabcea7746294f75c9 [2020-11-09 12:42:51,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:42:51,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:42:51,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:42:51,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:42:51,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:42:51,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:42:51" (1/1) ... [2020-11-09 12:42:51,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edc196c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:51, skipping insertion in model container [2020-11-09 12:42:51,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:42:51" (1/1) ... [2020-11-09 12:42:51,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:42:51,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:42:52,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:42:52,111 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:42:52,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:42:52,354 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:42:52,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52 WrapperNode [2020-11-09 12:42:52,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:42:52,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:42:52,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:42:52,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:42:52,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:42:52,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:42:52,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:42:52,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:42:52,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... [2020-11-09 12:42:52,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:42:52,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:42:52,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:42:52,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:42:52,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:42:52,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:42:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:42:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:42:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:42:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:42:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:42:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:42:52,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:42:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:42:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:42:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:42:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:42:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:42:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:42:52,613 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:42:53,121 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:42:53,122 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:42:53,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:42:53 BoogieIcfgContainer [2020-11-09 12:42:53,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:42:53,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:42:53,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:42:53,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:42:53,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:42:51" (1/3) ... [2020-11-09 12:42:53,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7064c986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:42:53, skipping insertion in model container [2020-11-09 12:42:53,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:42:52" (2/3) ... [2020-11-09 12:42:53,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7064c986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:42:53, skipping insertion in model container [2020-11-09 12:42:53,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:42:53" (3/3) ... [2020-11-09 12:42:53,134 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-11-09 12:42:53,151 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:42:53,151 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:42:53,155 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:42:53,156 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:42:53,188 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,189 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,189 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,189 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,190 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,192 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,193 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,193 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,194 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,194 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,195 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,196 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,201 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,208 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,209 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,209 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,212 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,213 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,213 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:42:53,220 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:42:53,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:42:53,257 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:42:53,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:42:53,258 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:42:53,258 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:42:53,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:42:53,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:42:53,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:42:53,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:42:53,271 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:42:53,273 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:42:53,277 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:42:53,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 12:42:53,326 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 12:42:53,326 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:42:53,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:42:53,335 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:42:53,827 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-09 12:42:56,807 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-09 12:42:57,724 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:42:57,856 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:42:58,124 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:42:58,242 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:42:58,478 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-09 12:42:58,478 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 12:42:58,486 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:42:58,515 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:42:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:42:58,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:42:58,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:58,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:58,528 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:58,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-09 12:42:58,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:58,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414344439] [2020-11-09 12:42:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:42:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:42:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:42:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414344439] [2020-11-09 12:42:58,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:42:58,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:42:58,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539371276] [2020-11-09 12:42:58,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:42:58,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:42:58,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:42:58,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:42:58,854 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:42:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:42:58,913 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 12:42:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:42:58,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:42:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:42:58,952 INFO L225 Difference]: With dead ends: 282 [2020-11-09 12:42:58,953 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 12:42:58,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:42:58,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 12:42:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 12:42:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 12:42:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 12:42:59,037 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 12:42:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:42:59,039 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 12:42:59,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:42:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 12:42:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:42:59,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:59,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:59,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:42:59,043 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:59,043 INFO L82 PathProgramCache]: Analyzing trace with hash 319392730, now seen corresponding path program 1 times [2020-11-09 12:42:59,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:59,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509009767] [2020-11-09 12:42:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:42:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:42:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:42:59,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509009767] [2020-11-09 12:42:59,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:42:59,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:42:59,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883925056] [2020-11-09 12:42:59,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:42:59,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:42:59,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:42:59,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:42:59,147 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 12:42:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:42:59,182 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-11-09 12:42:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:42:59,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:42:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:42:59,186 INFO L225 Difference]: With dead ends: 296 [2020-11-09 12:42:59,186 INFO L226 Difference]: Without dead ends: 200 [2020-11-09 12:42:59,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:42:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-09 12:42:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-11-09 12:42:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-11-09 12:42:59,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-11-09 12:42:59,219 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-11-09 12:42:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:42:59,219 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-11-09 12:42:59,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:42:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-11-09 12:42:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:42:59,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:59,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:59,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:42:59,225 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1338497509, now seen corresponding path program 1 times [2020-11-09 12:42:59,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:59,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977574997] [2020-11-09 12:42:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:42:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:42:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:42:59,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977574997] [2020-11-09 12:42:59,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:42:59,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:42:59,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865970580] [2020-11-09 12:42:59,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:42:59,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:42:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:42:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:42:59,334 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-11-09 12:42:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:42:59,393 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-11-09 12:42:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:42:59,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 12:42:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:42:59,397 INFO L225 Difference]: With dead ends: 314 [2020-11-09 12:42:59,398 INFO L226 Difference]: Without dead ends: 182 [2020-11-09 12:42:59,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:42:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-09 12:42:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-11-09 12:42:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 12:42:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-11-09 12:42:59,411 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-11-09 12:42:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:42:59,412 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-11-09 12:42:59,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:42:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-11-09 12:42:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:42:59,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:59,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:59,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:42:59,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-11-09 12:42:59,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:59,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312668165] [2020-11-09 12:42:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:42:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:42:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:42:59,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312668165] [2020-11-09 12:42:59,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:42:59,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:42:59,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191823779] [2020-11-09 12:42:59,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:42:59,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:42:59,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:42:59,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:42:59,458 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-11-09 12:42:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:42:59,472 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-11-09 12:42:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:42:59,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 12:42:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:42:59,474 INFO L225 Difference]: With dead ends: 176 [2020-11-09 12:42:59,474 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 12:42:59,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:42:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 12:42:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 12:42:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 12:42:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-11-09 12:42:59,482 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-11-09 12:42:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:42:59,482 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-11-09 12:42:59,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:42:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-11-09 12:42:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:42:59,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:59,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:59,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:42:59,484 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:59,484 INFO L82 PathProgramCache]: Analyzing trace with hash -337754424, now seen corresponding path program 1 times [2020-11-09 12:42:59,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:59,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062515364] [2020-11-09 12:42:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:42:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:42:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:42:59,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062515364] [2020-11-09 12:42:59,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:42:59,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:42:59,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512960427] [2020-11-09 12:42:59,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:42:59,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:42:59,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:42:59,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:42:59,547 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand 3 states. [2020-11-09 12:42:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:42:59,552 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-11-09 12:42:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:42:59,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 12:42:59,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:42:59,554 INFO L225 Difference]: With dead ends: 80 [2020-11-09 12:42:59,554 INFO L226 Difference]: Without dead ends: 80 [2020-11-09 12:42:59,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:42:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-09 12:42:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-09 12:42:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-09 12:42:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-11-09 12:42:59,560 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-11-09 12:42:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:42:59,560 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-11-09 12:42:59,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:42:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-11-09 12:42:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:42:59,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:59,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:59,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:42:59,562 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1881630110, now seen corresponding path program 1 times [2020-11-09 12:42:59,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:59,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122215075] [2020-11-09 12:42:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:42:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:42:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:42:59,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122215075] [2020-11-09 12:42:59,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:42:59,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:42:59,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600504988] [2020-11-09 12:42:59,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:42:59,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:42:59,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:42:59,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:42:59,691 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-11-09 12:42:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:42:59,736 INFO L93 Difference]: Finished difference Result 97 states and 201 transitions. [2020-11-09 12:42:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:42:59,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:42:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:42:59,738 INFO L225 Difference]: With dead ends: 97 [2020-11-09 12:42:59,738 INFO L226 Difference]: Without dead ends: 69 [2020-11-09 12:42:59,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:42:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-09 12:42:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-09 12:42:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-09 12:42:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 141 transitions. [2020-11-09 12:42:59,751 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 141 transitions. Word has length 13 [2020-11-09 12:42:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:42:59,752 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 141 transitions. [2020-11-09 12:42:59,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:42:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 141 transitions. [2020-11-09 12:42:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:42:59,757 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:59,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:59,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:42:59,758 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:59,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720345, now seen corresponding path program 1 times [2020-11-09 12:42:59,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:59,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774620051] [2020-11-09 12:42:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:42:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:42:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:42:59,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774620051] [2020-11-09 12:42:59,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:42:59,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:42:59,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228856343] [2020-11-09 12:42:59,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:42:59,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:42:59,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:42:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:42:59,870 INFO L87 Difference]: Start difference. First operand 69 states and 141 transitions. Second operand 5 states. [2020-11-09 12:42:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:42:59,952 INFO L93 Difference]: Finished difference Result 71 states and 132 transitions. [2020-11-09 12:42:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:42:59,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:42:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:42:59,955 INFO L225 Difference]: With dead ends: 71 [2020-11-09 12:42:59,955 INFO L226 Difference]: Without dead ends: 52 [2020-11-09 12:42:59,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:42:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-09 12:42:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-09 12:42:59,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-09 12:42:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-11-09 12:42:59,960 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-11-09 12:42:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:42:59,961 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-11-09 12:42:59,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:42:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-11-09 12:42:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:42:59,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:42:59,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:42:59,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:42:59,963 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:42:59,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:42:59,963 INFO L82 PathProgramCache]: Analyzing trace with hash 391097630, now seen corresponding path program 1 times [2020-11-09 12:42:59,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:42:59,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656408496] [2020-11-09 12:42:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:43:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:43:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:43:00,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656408496] [2020-11-09 12:43:00,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:43:00,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:43:00,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858468794] [2020-11-09 12:43:00,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:43:00,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:43:00,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:43:00,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:43:00,077 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 6 states. [2020-11-09 12:43:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:43:00,155 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2020-11-09 12:43:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:43:00,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:43:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:43:00,156 INFO L225 Difference]: With dead ends: 49 [2020-11-09 12:43:00,156 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 12:43:00,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:43:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 12:43:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-09 12:43:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 12:43:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-11-09 12:43:00,159 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 15 [2020-11-09 12:43:00,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:43:00,160 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-11-09 12:43:00,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:43:00,160 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-11-09 12:43:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:43:00,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:43:00,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:43:00,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:43:00,163 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:43:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:43:00,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 1 times [2020-11-09 12:43:00,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:43:00,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881110948] [2020-11-09 12:43:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:43:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:43:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:43:00,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881110948] [2020-11-09 12:43:00,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:43:00,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:43:00,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139847518] [2020-11-09 12:43:00,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:43:00,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:43:00,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:43:00,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:43:00,244 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-11-09 12:43:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:43:00,269 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-11-09 12:43:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:43:00,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:43:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:43:00,269 INFO L225 Difference]: With dead ends: 41 [2020-11-09 12:43:00,269 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:43:00,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:43:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:43:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:43:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:43:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:43:00,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:43:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:43:00,271 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:43:00,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:43:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:43:00,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:43:00,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:43:00,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:43:00 BasicIcfg [2020-11-09 12:43:00,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:43:00,278 INFO L168 Benchmark]: Toolchain (without parser) took 8680.64 ms. Allocated memory was 152.0 MB in the beginning and 231.7 MB in the end (delta: 79.7 MB). Free memory was 125.3 MB in the beginning and 154.4 MB in the end (delta: -29.1 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:43:00,278 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:43:00,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.30 ms. Allocated memory is still 152.0 MB. Free memory was 124.7 MB in the beginning and 129.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 8.0 GB. [2020-11-09 12:43:00,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.32 ms. Allocated memory is still 152.0 MB. Free memory was 129.3 MB in the beginning and 127.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:43:00,287 INFO L168 Benchmark]: Boogie Preprocessor took 58.90 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 126.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:43:00,288 INFO L168 Benchmark]: RCFGBuilder took 607.95 ms. Allocated memory is still 152.0 MB. Free memory was 125.7 MB in the beginning and 103.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:43:00,292 INFO L168 Benchmark]: TraceAbstraction took 7148.94 ms. Allocated memory was 152.0 MB in the beginning and 231.7 MB in the end (delta: 79.7 MB). Free memory was 103.2 MB in the beginning and 154.4 MB in the end (delta: -51.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:43:00,301 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 152.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 748.30 ms. Allocated memory is still 152.0 MB. Free memory was 124.7 MB in the beginning and 129.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 93.32 ms. Allocated memory is still 152.0 MB. Free memory was 129.3 MB in the beginning and 127.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.90 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 126.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 607.95 ms. Allocated memory is still 152.0 MB. Free memory was 125.7 MB in the beginning and 103.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7148.94 ms. Allocated memory was 152.0 MB in the beginning and 231.7 MB in the end (delta: 79.7 MB). Free memory was 103.2 MB in the beginning and 154.4 MB in the end (delta: -51.2 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1009 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.2s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 172 SDtfs, 134 SDslu, 188 SDs, 0 SdLazy, 119 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...