/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/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:54:33,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:54:33,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:54:33,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:54:33,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:54:33,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:54:33,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:54:33,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:54:33,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:54:33,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:54:33,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:54:33,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:54:33,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:54:33,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:54:33,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:54:33,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:54:33,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:54:33,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:54:33,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:54:33,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:54:33,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:54:33,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:54:33,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:54:33,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:54:33,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:54:33,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:54:33,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:54:33,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:54:33,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:54:33,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:54:33,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:54:33,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:54:33,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:54:33,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:54:33,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:54:33,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:54:33,875 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 12:54:33,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:54:33,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:54:33,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:54:33,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:54:33,933 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:54:33,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:54:33,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:54:33,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:54:33,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:54:33,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:54:33,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:54:33,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:54:33,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:54:33,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:54:33,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:54:33,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:54:33,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:54:33,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:54:33,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:54:33,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:54:33,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:54:33,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:54:33,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:54:33,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:54:33,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:54:33,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:54:33,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:54:33,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:54:33,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:54:33,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:54:34,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:54:34,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:54:34,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:54:34,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:54:34,449 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:54:34,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-11-09 12:54:34,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbad6d3d3/d79f78aba70f45ad8d991d89bc765cc4/FLAGbf821a132 [2020-11-09 12:54:35,444 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:54:35,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2020-11-09 12:54:35,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbad6d3d3/d79f78aba70f45ad8d991d89bc765cc4/FLAGbf821a132 [2020-11-09 12:54:35,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbad6d3d3/d79f78aba70f45ad8d991d89bc765cc4 [2020-11-09 12:54:35,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:54:35,676 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:54:35,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:54:35,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:54:35,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:54:35,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:54:35" (1/1) ... [2020-11-09 12:54:35,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c31744d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:35, skipping insertion in model container [2020-11-09 12:54:35,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:54:35" (1/1) ... [2020-11-09 12:54:35,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:54:35,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:54:36,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:54:36,172 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:54:36,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:54:36,362 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:54:36,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36 WrapperNode [2020-11-09 12:54:36,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:54:36,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:54:36,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:54:36,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:54:36,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:54:36,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:54:36,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:54:36,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:54:36,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (1/1) ... [2020-11-09 12:54:36,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:54:36,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:54:36,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:54:36,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:54:36,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (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 12:54:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:54:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:54:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:54:36,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:54:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:54:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:54:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:54:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:54:36,569 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:54:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:54:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:54:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:54:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:54:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:54:36,573 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 12:54:37,036 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:54:37,037 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:54:37,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:54:37 BoogieIcfgContainer [2020-11-09 12:54:37,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:54:37,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:54:37,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:54:37,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:54:37,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:54:35" (1/3) ... [2020-11-09 12:54:37,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fe86fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:54:37, skipping insertion in model container [2020-11-09 12:54:37,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:54:36" (2/3) ... [2020-11-09 12:54:37,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48fe86fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:54:37, skipping insertion in model container [2020-11-09 12:54:37,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:54:37" (3/3) ... [2020-11-09 12:54:37,052 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2020-11-09 12:54:37,068 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:54:37,068 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:54:37,072 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:54:37,072 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:54:37,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,105 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,105 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,108 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,109 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,109 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,116 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,117 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,126 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:54:37,132 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:54:37,146 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:54:37,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:54:37,168 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:54:37,168 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:54:37,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:54:37,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:54:37,169 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:54:37,169 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:54:37,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:54:37,183 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:54:37,186 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:54:37,189 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:54:37,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 12:54:37,246 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 12:54:37,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:54:37,253 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 61 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 12:54:37,274 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:54:40,134 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-09 12:54:41,188 WARN L194 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:54:41,324 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:54:41,613 WARN L194 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:54:41,740 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:54:41,779 INFO L131 LiptonReduction]: Checked pairs total: 2658 [2020-11-09 12:54:41,780 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 12:54:41,789 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 12:54:41,825 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 12:54:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 12:54:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:54:41,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:41,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:41,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:41,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1479466227, now seen corresponding path program 1 times [2020-11-09 12:54:41,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:41,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477732746] [2020-11-09 12:54:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:42,196 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 12:54:42,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477732746] [2020-11-09 12:54:42,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:42,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:54:42,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179985650] [2020-11-09 12:54:42,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:54:42,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:42,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:54:42,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:54:42,234 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 12:54:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:42,286 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 12:54:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:54:42,288 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 12:54:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:42,307 INFO L225 Difference]: With dead ends: 362 [2020-11-09 12:54:42,307 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 12:54:42,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:54:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 12:54:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 12:54:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 12:54:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 12:54:42,397 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 12:54:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:42,398 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 12:54:42,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:54:42,398 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 12:54:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:54:42,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:42,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:42,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:54:42,401 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:42,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1381176445, now seen corresponding path program 1 times [2020-11-09 12:54:42,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:42,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973283978] [2020-11-09 12:54:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:42,583 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 12:54:42,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973283978] [2020-11-09 12:54:42,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:42,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:54:42,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655506213] [2020-11-09 12:54:42,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:54:42,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:42,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:54:42,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:54:42,589 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 12:54:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:42,649 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-11-09 12:54:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:54:42,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:54:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:42,658 INFO L225 Difference]: With dead ends: 346 [2020-11-09 12:54:42,660 INFO L226 Difference]: Without dead ends: 282 [2020-11-09 12:54:42,662 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 12:54:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-09 12:54:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-11-09 12:54:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-09 12:54:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-11-09 12:54:42,717 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-11-09 12:54:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:42,717 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-11-09 12:54:42,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:54:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-11-09 12:54:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:54:42,720 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:42,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:42,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:54:42,720 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:42,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1310825236, now seen corresponding path program 1 times [2020-11-09 12:54:42,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:42,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488589864] [2020-11-09 12:54:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:42,877 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 12:54:42,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488589864] [2020-11-09 12:54:42,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:42,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:54:42,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008228611] [2020-11-09 12:54:42,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:54:42,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:42,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:54:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:54:42,888 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-11-09 12:54:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:42,949 INFO L93 Difference]: Finished difference Result 277 states and 699 transitions. [2020-11-09 12:54:42,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:54:42,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 12:54:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:42,952 INFO L225 Difference]: With dead ends: 277 [2020-11-09 12:54:42,953 INFO L226 Difference]: Without dead ends: 213 [2020-11-09 12:54:42,953 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 12:54:42,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-11-09 12:54:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-11-09 12:54:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-11-09 12:54:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 528 transitions. [2020-11-09 12:54:42,966 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 528 transitions. Word has length 10 [2020-11-09 12:54:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:42,966 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 528 transitions. [2020-11-09 12:54:42,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:54:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 528 transitions. [2020-11-09 12:54:42,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:54:42,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:42,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:42,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:54:42,968 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash -346485744, now seen corresponding path program 1 times [2020-11-09 12:54:42,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:42,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413446140] [2020-11-09 12:54:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:43,045 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 12:54:43,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413446140] [2020-11-09 12:54:43,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:43,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:54:43,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434278131] [2020-11-09 12:54:43,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:54:43,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:43,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:54:43,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:54:43,048 INFO L87 Difference]: Start difference. First operand 213 states and 528 transitions. Second operand 5 states. [2020-11-09 12:54:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:43,098 INFO L93 Difference]: Finished difference Result 173 states and 387 transitions. [2020-11-09 12:54:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:54:43,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 12:54:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:43,100 INFO L225 Difference]: With dead ends: 173 [2020-11-09 12:54:43,100 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 12:54:43,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 12:54:43,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 12:54:43,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 12:54:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 12:54:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 12:54:43,107 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 12:54:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:43,107 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 12:54:43,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:54:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 12:54:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:54:43,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:43,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:43,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:54:43,110 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:43,110 INFO L82 PathProgramCache]: Analyzing trace with hash 685431305, now seen corresponding path program 1 times [2020-11-09 12:54:43,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:43,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443891083] [2020-11-09 12:54:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:43,211 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 12:54:43,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443891083] [2020-11-09 12:54:43,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:43,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 12:54:43,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326783137] [2020-11-09 12:54:43,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:54:43,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:43,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:54:43,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:54:43,214 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-09 12:54:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:43,287 INFO L93 Difference]: Finished difference Result 119 states and 261 transitions. [2020-11-09 12:54:43,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:54:43,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:54:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:43,288 INFO L225 Difference]: With dead ends: 119 [2020-11-09 12:54:43,288 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 12:54:43,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 12:54:43,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 12:54:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 12:54:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 12:54:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 12:54:43,307 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 12:54:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:43,307 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 12:54:43,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:54:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 12:54:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:54:43,310 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:43,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:43,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:54:43,311 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 461507696, now seen corresponding path program 1 times [2020-11-09 12:54:43,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:43,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126306961] [2020-11-09 12:54:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:43,402 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 12:54:43,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126306961] [2020-11-09 12:54:43,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:43,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:54:43,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172322479] [2020-11-09 12:54:43,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:54:43,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:43,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:54:43,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:54:43,405 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 12:54:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:43,434 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-09 12:54:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:54:43,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 12:54:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:43,435 INFO L225 Difference]: With dead ends: 135 [2020-11-09 12:54:43,436 INFO L226 Difference]: Without dead ends: 55 [2020-11-09 12:54:43,436 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 12:54:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-09 12:54:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-09 12:54:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 12:54:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-11-09 12:54:43,439 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-11-09 12:54:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:43,439 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-11-09 12:54:43,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:54:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-11-09 12:54:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:54:43,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:43,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:43,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:54:43,441 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:43,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:43,441 INFO L82 PathProgramCache]: Analyzing trace with hash 356647694, now seen corresponding path program 2 times [2020-11-09 12:54:43,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:43,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944905627] [2020-11-09 12:54:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:43,498 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 12:54:43,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944905627] [2020-11-09 12:54:43,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:43,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:54:43,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069296917] [2020-11-09 12:54:43,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:54:43,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:43,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:54:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:54:43,501 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-11-09 12:54:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:43,537 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-11-09 12:54:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:54:43,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 12:54:43,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:43,538 INFO L225 Difference]: With dead ends: 69 [2020-11-09 12:54:43,539 INFO L226 Difference]: Without dead ends: 31 [2020-11-09 12:54:43,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:54:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-09 12:54:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-09 12:54:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-09 12:54:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-09 12:54:43,541 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-09 12:54:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:43,541 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-09 12:54:43,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:54:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-09 12:54:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:54:43,542 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:54:43,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:54:43,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:54:43,543 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:54:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:54:43,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1017008488, now seen corresponding path program 3 times [2020-11-09 12:54:43,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:54:43,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459385669] [2020-11-09 12:54:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:54:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:54:43,599 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 12:54:43,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459385669] [2020-11-09 12:54:43,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:54:43,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:54:43,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442460369] [2020-11-09 12:54:43,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:54:43,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:54:43,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:54:43,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:54:43,601 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-11-09 12:54:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:54:43,631 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-09 12:54:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:54:43,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 12:54:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:54:43,632 INFO L225 Difference]: With dead ends: 30 [2020-11-09 12:54:43,632 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:54:43,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:54:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:54:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:54:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:54:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:54:43,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 12:54:43,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:54:43,634 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:54:43,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:54:43,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:54:43,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:54:43,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:54:43,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:54:43 BasicIcfg [2020-11-09 12:54:43,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:54:43,640 INFO L168 Benchmark]: Toolchain (without parser) took 7967.87 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 100.4 MB in the beginning and 96.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 36.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:43,641 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:54:43,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.05 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 99.6 MB in the beginning and 131.3 MB in the end (delta: -31.7 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:43,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.32 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 129.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:43,643 INFO L168 Benchmark]: Boogie Preprocessor took 38.99 ms. Allocated memory is still 156.2 MB. Free memory was 129.2 MB in the beginning and 128.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:43,644 INFO L168 Benchmark]: RCFGBuilder took 569.20 ms. Allocated memory is still 156.2 MB. Free memory was 128.2 MB in the beginning and 106.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:43,645 INFO L168 Benchmark]: TraceAbstraction took 6596.47 ms. Allocated memory is still 156.2 MB. Free memory was 105.7 MB in the beginning and 96.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 8.0 GB. [2020-11-09 12:54:43,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 686.05 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 99.6 MB in the beginning and 131.3 MB in the end (delta: -31.7 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 64.32 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 129.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.99 ms. Allocated memory is still 156.2 MB. Free memory was 129.2 MB in the beginning and 128.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.20 ms. Allocated memory is still 156.2 MB. Free memory was 128.2 MB in the beginning and 106.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6596.47 ms. Allocated memory is still 156.2 MB. Free memory was 105.7 MB in the beginning and 96.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 948 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2658 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 172 SDtfs, 134 SDslu, 291 SDs, 0 SdLazy, 108 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...