/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 06:37:37,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 06:37:37,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 06:37:37,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 06:37:37,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 06:37:37,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 06:37:37,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 06:37:37,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 06:37:38,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 06:37:38,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 06:37:38,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 06:37:38,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 06:37:38,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 06:37:38,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 06:37:38,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 06:37:38,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 06:37:38,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 06:37:38,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 06:37:38,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 06:37:38,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 06:37:38,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 06:37:38,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 06:37:38,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 06:37:38,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 06:37:38,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 06:37:38,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 06:37:38,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 06:37:38,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 06:37:38,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 06:37:38,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 06:37:38,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 06:37:38,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 06:37:38,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 06:37:38,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 06:37:38,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 06:37:38,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 06:37:38,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 06:37:38,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 06:37:38,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 06:37:38,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 06:37:38,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 06:37:38,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 06:37:38,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 06:37:38,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 06:37:38,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 06:37:38,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 06:37:38,083 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 06:37:38,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 06:37:38,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 06:37:38,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 06:37:38,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 06:37:38,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 06:37:38,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 06:37:38,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 06:37:38,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 06:37:38,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 06:37:38,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 06:37:38,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 06:37:38,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 06:37:38,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 06:37:38,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 06:37:38,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 06:37:38,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 06:37:38,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:37:38,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 06:37:38,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 06:37:38,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 06:37:38,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 06:37:38,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 06:37:38,087 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 06:37:38,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 06:37:38,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 06:37:38,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 06:37:38,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 06:37:38,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 06:37:38,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 06:37:38,385 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 06:37:38,386 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-04-18 06:37:38,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539c1abe0/bc39aa9976174aa6badeed3d8dc8a93b/FLAG989bcc2ed [2020-04-18 06:37:39,002 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 06:37:39,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-04-18 06:37:39,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539c1abe0/bc39aa9976174aa6badeed3d8dc8a93b/FLAG989bcc2ed [2020-04-18 06:37:39,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539c1abe0/bc39aa9976174aa6badeed3d8dc8a93b [2020-04-18 06:37:39,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 06:37:39,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 06:37:39,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 06:37:39,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 06:37:39,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 06:37:39,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:37:39" (1/1) ... [2020-04-18 06:37:39,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1d121f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:39, skipping insertion in model container [2020-04-18 06:37:39,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:37:39" (1/1) ... [2020-04-18 06:37:39,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 06:37:39,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 06:37:39,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:37:39,894 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 06:37:39,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 06:37:40,028 INFO L208 MainTranslator]: Completed translation [2020-04-18 06:37:40,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40 WrapperNode [2020-04-18 06:37:40,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 06:37:40,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 06:37:40,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 06:37:40,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 06:37:40,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 06:37:40,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 06:37:40,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 06:37:40,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 06:37:40,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... [2020-04-18 06:37:40,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 06:37:40,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 06:37:40,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 06:37:40,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 06:37:40,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 06:37:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 06:37:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 06:37:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 06:37:40,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 06:37:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 06:37:40,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 06:37:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 06:37:40,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 06:37:40,184 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 06:37:40,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 06:37:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 06:37:40,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 06:37:40,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 06:37:40,186 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 06:37:40,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 06:37:40,577 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 06:37:40,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:37:40 BoogieIcfgContainer [2020-04-18 06:37:40,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 06:37:40,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 06:37:40,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 06:37:40,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 06:37:40,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:37:39" (1/3) ... [2020-04-18 06:37:40,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de7342f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:37:40, skipping insertion in model container [2020-04-18 06:37:40,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:37:40" (2/3) ... [2020-04-18 06:37:40,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de7342f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:37:40, skipping insertion in model container [2020-04-18 06:37:40,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:37:40" (3/3) ... [2020-04-18 06:37:40,591 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-04-18 06:37:40,601 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 06:37:40,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 06:37:40,608 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 06:37:40,609 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 06:37:40,637 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,638 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,638 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,638 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,639 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,639 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,640 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,640 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,640 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,641 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,641 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,642 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,642 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,642 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,642 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,643 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,643 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,647 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,648 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,648 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,649 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,655 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,656 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,656 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,656 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,659 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,659 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,659 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,660 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 06:37:40,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 06:37:40,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 06:37:40,698 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 06:37:40,698 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 06:37:40,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 06:37:40,698 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 06:37:40,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 06:37:40,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 06:37:40,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 06:37:40,713 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 06:37:41,203 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 06:37:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 06:37:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 06:37:41,233 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:41,234 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:41,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:41,241 INFO L82 PathProgramCache]: Analyzing trace with hash 257296303, now seen corresponding path program 1 times [2020-04-18 06:37:41,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:41,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840698609] [2020-04-18 06:37:41,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:41,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840698609] [2020-04-18 06:37:41,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:41,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:37:41,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986522971] [2020-04-18 06:37:41,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:37:41,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:41,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:37:41,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:37:41,759 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 06:37:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:42,270 INFO L93 Difference]: Finished difference Result 18146 states and 62610 transitions. [2020-04-18 06:37:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:37:42,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 06:37:42,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:42,341 INFO L225 Difference]: With dead ends: 18146 [2020-04-18 06:37:42,341 INFO L226 Difference]: Without dead ends: 5567 [2020-04-18 06:37:42,343 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:37:42,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2020-04-18 06:37:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 4727. [2020-04-18 06:37:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4727 states. [2020-04-18 06:37:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 15961 transitions. [2020-04-18 06:37:42,773 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 15961 transitions. Word has length 36 [2020-04-18 06:37:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:42,776 INFO L479 AbstractCegarLoop]: Abstraction has 4727 states and 15961 transitions. [2020-04-18 06:37:42,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:37:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 15961 transitions. [2020-04-18 06:37:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:37:42,789 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:42,789 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:42,790 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:42,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1122211280, now seen corresponding path program 1 times [2020-04-18 06:37:42,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:42,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542191725] [2020-04-18 06:37:42,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:42,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542191725] [2020-04-18 06:37:42,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:42,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:37:42,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281853480] [2020-04-18 06:37:42,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:37:42,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:42,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:37:42,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:37:42,966 INFO L87 Difference]: Start difference. First operand 4727 states and 15961 transitions. Second operand 6 states. [2020-04-18 06:37:43,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:43,163 INFO L93 Difference]: Finished difference Result 5287 states and 17694 transitions. [2020-04-18 06:37:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:37:43,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 06:37:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:43,199 INFO L225 Difference]: With dead ends: 5287 [2020-04-18 06:37:43,199 INFO L226 Difference]: Without dead ends: 4307 [2020-04-18 06:37:43,200 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:37:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2020-04-18 06:37:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4307. [2020-04-18 06:37:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2020-04-18 06:37:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 14425 transitions. [2020-04-18 06:37:43,344 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 14425 transitions. Word has length 38 [2020-04-18 06:37:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:43,345 INFO L479 AbstractCegarLoop]: Abstraction has 4307 states and 14425 transitions. [2020-04-18 06:37:43,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:37:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 14425 transitions. [2020-04-18 06:37:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 06:37:43,355 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:43,355 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:43,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1623074190, now seen corresponding path program 1 times [2020-04-18 06:37:43,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:43,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822679343] [2020-04-18 06:37:43,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:43,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822679343] [2020-04-18 06:37:43,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:43,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:37:43,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692986464] [2020-04-18 06:37:43,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:37:43,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:43,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:37:43,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:37:43,609 INFO L87 Difference]: Start difference. First operand 4307 states and 14425 transitions. Second operand 7 states. [2020-04-18 06:37:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:43,916 INFO L93 Difference]: Finished difference Result 6267 states and 20648 transitions. [2020-04-18 06:37:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 06:37:43,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 06:37:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:43,952 INFO L225 Difference]: With dead ends: 6267 [2020-04-18 06:37:43,953 INFO L226 Difference]: Without dead ends: 4727 [2020-04-18 06:37:43,953 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:37:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-04-18 06:37:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 3887. [2020-04-18 06:37:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3887 states. [2020-04-18 06:37:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 12945 transitions. [2020-04-18 06:37:44,088 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 12945 transitions. Word has length 38 [2020-04-18 06:37:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:44,088 INFO L479 AbstractCegarLoop]: Abstraction has 3887 states and 12945 transitions. [2020-04-18 06:37:44,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:37:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 12945 transitions. [2020-04-18 06:37:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 06:37:44,098 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:44,098 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:44,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:44,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1233785905, now seen corresponding path program 1 times [2020-04-18 06:37:44,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:44,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49447440] [2020-04-18 06:37:44,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:44,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49447440] [2020-04-18 06:37:44,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:44,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:37:44,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607027811] [2020-04-18 06:37:44,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:37:44,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:37:44,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:37:44,209 INFO L87 Difference]: Start difference. First operand 3887 states and 12945 transitions. Second operand 7 states. [2020-04-18 06:37:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:44,399 INFO L93 Difference]: Finished difference Result 5229 states and 17208 transitions. [2020-04-18 06:37:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:37:44,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 06:37:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:44,411 INFO L225 Difference]: With dead ends: 5229 [2020-04-18 06:37:44,411 INFO L226 Difference]: Without dead ends: 2618 [2020-04-18 06:37:44,412 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 06:37:44,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-04-18 06:37:44,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2618. [2020-04-18 06:37:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2618 states. [2020-04-18 06:37:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 8376 transitions. [2020-04-18 06:37:44,883 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 8376 transitions. Word has length 40 [2020-04-18 06:37:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:44,884 INFO L479 AbstractCegarLoop]: Abstraction has 2618 states and 8376 transitions. [2020-04-18 06:37:44,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:37:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 8376 transitions. [2020-04-18 06:37:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 06:37:44,891 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:44,891 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:44,891 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:44,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1999869972, now seen corresponding path program 1 times [2020-04-18 06:37:44,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:44,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886396494] [2020-04-18 06:37:44,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:45,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886396494] [2020-04-18 06:37:45,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:45,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 06:37:45,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292436775] [2020-04-18 06:37:45,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 06:37:45,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 06:37:45,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 06:37:45,043 INFO L87 Difference]: Start difference. First operand 2618 states and 8376 transitions. Second operand 6 states. [2020-04-18 06:37:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:45,178 INFO L93 Difference]: Finished difference Result 3405 states and 10752 transitions. [2020-04-18 06:37:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 06:37:45,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-04-18 06:37:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:45,187 INFO L225 Difference]: With dead ends: 3405 [2020-04-18 06:37:45,187 INFO L226 Difference]: Without dead ends: 2389 [2020-04-18 06:37:45,188 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:37:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-04-18 06:37:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2020-04-18 06:37:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2389 states. [2020-04-18 06:37:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 7525 transitions. [2020-04-18 06:37:45,255 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 7525 transitions. Word has length 43 [2020-04-18 06:37:45,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:45,256 INFO L479 AbstractCegarLoop]: Abstraction has 2389 states and 7525 transitions. [2020-04-18 06:37:45,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 06:37:45,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 7525 transitions. [2020-04-18 06:37:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 06:37:45,262 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:45,263 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:45,263 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:45,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:45,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1628273071, now seen corresponding path program 1 times [2020-04-18 06:37:45,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:45,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430037739] [2020-04-18 06:37:45,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:45,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430037739] [2020-04-18 06:37:45,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:45,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:37:45,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126837903] [2020-04-18 06:37:45,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:37:45,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:45,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:37:45,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:37:45,380 INFO L87 Difference]: Start difference. First operand 2389 states and 7525 transitions. Second operand 7 states. [2020-04-18 06:37:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:45,556 INFO L93 Difference]: Finished difference Result 2617 states and 8031 transitions. [2020-04-18 06:37:45,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 06:37:45,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-04-18 06:37:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:45,565 INFO L225 Difference]: With dead ends: 2617 [2020-04-18 06:37:45,565 INFO L226 Difference]: Without dead ends: 1765 [2020-04-18 06:37:45,566 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 06:37:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2020-04-18 06:37:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1765. [2020-04-18 06:37:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-04-18 06:37:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 5312 transitions. [2020-04-18 06:37:45,636 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 5312 transitions. Word has length 44 [2020-04-18 06:37:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:45,637 INFO L479 AbstractCegarLoop]: Abstraction has 1765 states and 5312 transitions. [2020-04-18 06:37:45,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:37:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 5312 transitions. [2020-04-18 06:37:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 06:37:45,643 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:45,644 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:45,644 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1107359960, now seen corresponding path program 1 times [2020-04-18 06:37:45,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:45,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480468059] [2020-04-18 06:37:45,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:45,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480468059] [2020-04-18 06:37:45,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:45,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 06:37:45,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574607047] [2020-04-18 06:37:45,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 06:37:45,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:45,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 06:37:45,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 06:37:45,837 INFO L87 Difference]: Start difference. First operand 1765 states and 5312 transitions. Second operand 8 states. [2020-04-18 06:37:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:46,045 INFO L93 Difference]: Finished difference Result 1513 states and 4418 transitions. [2020-04-18 06:37:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 06:37:46,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-04-18 06:37:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:46,049 INFO L225 Difference]: With dead ends: 1513 [2020-04-18 06:37:46,049 INFO L226 Difference]: Without dead ends: 773 [2020-04-18 06:37:46,049 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-04-18 06:37:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-04-18 06:37:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 741. [2020-04-18 06:37:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-04-18 06:37:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2085 transitions. [2020-04-18 06:37:46,067 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2085 transitions. Word has length 46 [2020-04-18 06:37:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:46,068 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 2085 transitions. [2020-04-18 06:37:46,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 06:37:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2085 transitions. [2020-04-18 06:37:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:37:46,070 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:46,070 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:46,071 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:46,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1230476627, now seen corresponding path program 1 times [2020-04-18 06:37:46,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:46,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460318118] [2020-04-18 06:37:46,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:46,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460318118] [2020-04-18 06:37:46,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:46,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:37:46,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298406349] [2020-04-18 06:37:46,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:37:46,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:46,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:37:46,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:37:46,183 INFO L87 Difference]: Start difference. First operand 741 states and 2085 transitions. Second operand 7 states. [2020-04-18 06:37:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:46,265 INFO L93 Difference]: Finished difference Result 1144 states and 3262 transitions. [2020-04-18 06:37:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:37:46,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-04-18 06:37:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:46,268 INFO L225 Difference]: With dead ends: 1144 [2020-04-18 06:37:46,268 INFO L226 Difference]: Without dead ends: 673 [2020-04-18 06:37:46,269 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 06:37:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-04-18 06:37:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2020-04-18 06:37:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-04-18 06:37:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1883 transitions. [2020-04-18 06:37:46,284 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1883 transitions. Word has length 48 [2020-04-18 06:37:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:46,284 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 1883 transitions. [2020-04-18 06:37:46,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:37:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1883 transitions. [2020-04-18 06:37:46,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 06:37:46,286 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 06:37:46,286 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 06:37:46,286 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 06:37:46,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 06:37:46,287 INFO L82 PathProgramCache]: Analyzing trace with hash 911362167, now seen corresponding path program 2 times [2020-04-18 06:37:46,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 06:37:46,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005598555] [2020-04-18 06:37:46,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 06:37:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 06:37:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 06:37:46,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005598555] [2020-04-18 06:37:46,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 06:37:46,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 06:37:46,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444644661] [2020-04-18 06:37:46,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 06:37:46,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 06:37:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 06:37:46,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 06:37:46,386 INFO L87 Difference]: Start difference. First operand 673 states and 1883 transitions. Second operand 7 states. [2020-04-18 06:37:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 06:37:46,476 INFO L93 Difference]: Finished difference Result 619 states and 1721 transitions. [2020-04-18 06:37:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 06:37:46,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-04-18 06:37:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 06:37:46,477 INFO L225 Difference]: With dead ends: 619 [2020-04-18 06:37:46,477 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 06:37:46,478 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 06:37:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 06:37:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 06:37:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 06:37:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 06:37:46,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 06:37:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 06:37:46,479 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 06:37:46,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 06:37:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 06:37:46,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 06:37:46,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:37:46 BasicIcfg [2020-04-18 06:37:46,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 06:37:46,491 INFO L168 Benchmark]: Toolchain (without parser) took 7173.53 ms. Allocated memory was 146.3 MB in the beginning and 471.3 MB in the end (delta: 325.1 MB). Free memory was 102.5 MB in the beginning and 302.0 MB in the end (delta: -199.5 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. [2020-04-18 06:37:46,493 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 146.3 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 06:37:46,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.08 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.5 MB in the beginning and 159.8 MB in the end (delta: -59.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-18 06:37:46,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 06:37:46,500 INFO L168 Benchmark]: Boogie Preprocessor took 32.10 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 06:37:46,501 INFO L168 Benchmark]: RCFGBuilder took 465.52 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 134.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 06:37:46,502 INFO L168 Benchmark]: TraceAbstraction took 5905.10 ms. Allocated memory was 203.4 MB in the beginning and 471.3 MB in the end (delta: 267.9 MB). Free memory was 133.6 MB in the beginning and 302.0 MB in the end (delta: -168.4 MB). Peak memory consumption was 99.5 MB. Max. memory is 7.1 GB. [2020-04-18 06:37:46,515 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 146.3 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.08 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.5 MB in the beginning and 159.8 MB in the end (delta: -59.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 157.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.10 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 156.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.52 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 134.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5905.10 ms. Allocated memory was 203.4 MB in the beginning and 471.3 MB in the end (delta: 267.9 MB). Free memory was 133.6 MB in the beginning and 302.0 MB in the end (delta: -168.4 MB). Peak memory consumption was 99.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 822 SDtfs, 1295 SDslu, 2632 SDs, 0 SdLazy, 333 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1712 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 381 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 56772 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...