/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 13:04:00,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 13:04:00,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 13:04:00,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 13:04:00,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 13:04:00,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 13:04:00,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 13:04:00,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 13:04:00,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 13:04:00,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 13:04:00,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 13:04:00,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 13:04:00,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 13:04:00,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 13:04:00,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 13:04:00,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 13:04:00,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 13:04:00,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 13:04:00,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 13:04:00,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 13:04:00,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 13:04:00,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 13:04:00,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 13:04:00,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 13:04:00,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 13:04:00,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 13:04:00,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 13:04:00,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 13:04:00,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 13:04:00,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 13:04:00,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 13:04:00,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 13:04:00,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 13:04:00,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 13:04:00,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 13:04:00,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 13:04:00,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 13:04:00,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 13:04:00,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 13:04:00,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 13:04:00,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 13:04:00,948 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 [2020-10-09 13:04:00,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 13:04:00,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 13:04:00,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 13:04:00,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 13:04:00,991 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 13:04:00,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 13:04:00,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 13:04:00,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 13:04:00,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 13:04:00,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 13:04:00,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 13:04:00,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 13:04:00,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 13:04:00,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 13:04:00,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 13:04:00,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 13:04:00,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 13:04:00,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 13:04:00,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 13:04:00,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 13:04:00,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 13:04:00,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 13:04:00,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 13:04:00,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 13:04:00,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 13:04:00,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 13:04:00,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 13:04:00,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 13:04:00,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 13:04:00,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 13:04:01,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 13:04:01,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 13:04:01,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 13:04:01,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 13:04:01,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 13:04:01,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-09 13:04:01,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88c71c6af/b67cad452a82477e898e1ea510d9cdfe/FLAG883e9b66f [2020-10-09 13:04:01,904 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 13:04:01,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-09 13:04:01,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88c71c6af/b67cad452a82477e898e1ea510d9cdfe/FLAG883e9b66f [2020-10-09 13:04:02,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88c71c6af/b67cad452a82477e898e1ea510d9cdfe [2020-10-09 13:04:02,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 13:04:02,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 13:04:02,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 13:04:02,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 13:04:02,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 13:04:02,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc45f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02, skipping insertion in model container [2020-10-09 13:04:02,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 13:04:02,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 13:04:02,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:04:02,766 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 13:04:02,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:04:02,925 INFO L208 MainTranslator]: Completed translation [2020-10-09 13:04:02,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02 WrapperNode [2020-10-09 13:04:02,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 13:04:02,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 13:04:02,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 13:04:02,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 13:04:02,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 13:04:02,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 13:04:02,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 13:04:02,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 13:04:02,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:02,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:03,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (1/1) ... [2020-10-09 13:04:03,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 13:04:03,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 13:04:03,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 13:04:03,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 13:04:03,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (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 [2020-10-09 13:04:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 13:04:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 13:04:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 13:04:03,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 13:04:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 13:04:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 13:04:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 13:04:03,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 13:04:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 13:04:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 13:04:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 13:04:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 13:04:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 13:04:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 13:04:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 13:04:03,099 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 13:04:03,573 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 13:04:03,574 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 13:04:03,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:04:03 BoogieIcfgContainer [2020-10-09 13:04:03,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 13:04:03,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 13:04:03,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 13:04:03,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 13:04:03,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 01:04:02" (1/3) ... [2020-10-09 13:04:03,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca7a958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:04:03, skipping insertion in model container [2020-10-09 13:04:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:02" (2/3) ... [2020-10-09 13:04:03,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca7a958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:04:03, skipping insertion in model container [2020-10-09 13:04:03,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:04:03" (3/3) ... [2020-10-09 13:04:03,585 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-10-09 13:04:03,597 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 13:04:03,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 13:04:03,606 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 13:04:03,607 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 13:04:03,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,640 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,641 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,642 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,642 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,642 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,642 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,643 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,646 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,647 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,647 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,654 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,654 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,654 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,655 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,660 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,663 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,663 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,663 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,664 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:03,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 13:04:03,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:04:03,700 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:04:03,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:04:03,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:04:03,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:04:03,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:04:03,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:04:03,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:04:03,719 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:04:03,722 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:03,725 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:03,727 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:03,822 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-09 13:04:03,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 13:04:03,831 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-09 13:04:03,839 INFO L117 LiptonReduction]: Number of co-enabled transitions 2016 [2020-10-09 13:04:05,170 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-09 13:04:05,694 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-09 13:04:05,749 INFO L132 LiptonReduction]: Checked pairs total: 4737 [2020-10-09 13:04:05,750 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-09 13:04:05,758 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-09 13:04:05,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-09 13:04:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-09 13:04:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 13:04:05,872 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:05,873 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:05,874 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:05,881 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-10-09 13:04:05,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:05,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161505934] [2020-10-09 13:04:05,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:06,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161505934] [2020-10-09 13:04:06,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:06,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:06,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402683452] [2020-10-09 13:04:06,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 13:04:06,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:06,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 13:04:06,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 13:04:06,108 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-09 13:04:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:06,177 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-09 13:04:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 13:04:06,178 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-09 13:04:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:06,216 INFO L225 Difference]: With dead ends: 1450 [2020-10-09 13:04:06,216 INFO L226 Difference]: Without dead ends: 1194 [2020-10-09 13:04:06,218 INFO L673 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 [2020-10-09 13:04:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-09 13:04:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-09 13:04:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-09 13:04:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-09 13:04:06,400 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-09 13:04:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:06,402 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-09 13:04:06,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 13:04:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-09 13:04:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 13:04:06,415 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:06,416 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:06,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 13:04:06,421 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-10-09 13:04:06,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:06,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933855161] [2020-10-09 13:04:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:06,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933855161] [2020-10-09 13:04:06,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:06,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:06,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929892888] [2020-10-09 13:04:06,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:06,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:06,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:06,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:06,649 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-09 13:04:06,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:06,690 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-09 13:04:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:06,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-09 13:04:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:06,700 INFO L225 Difference]: With dead ends: 1322 [2020-10-09 13:04:06,700 INFO L226 Difference]: Without dead ends: 1066 [2020-10-09 13:04:06,701 INFO L673 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 [2020-10-09 13:04:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-09 13:04:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-09 13:04:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-09 13:04:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-09 13:04:06,743 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-09 13:04:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:06,743 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-09 13:04:06,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-09 13:04:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 13:04:06,745 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:06,745 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:06,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 13:04:06,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:06,746 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-10-09 13:04:06,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:06,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195891569] [2020-10-09 13:04:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:06,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195891569] [2020-10-09 13:04:06,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:06,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:06,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098243124] [2020-10-09 13:04:06,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:06,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:06,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:06,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:06,805 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-09 13:04:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:06,837 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-09 13:04:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:06,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-09 13:04:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:06,846 INFO L225 Difference]: With dead ends: 1162 [2020-10-09 13:04:06,846 INFO L226 Difference]: Without dead ends: 970 [2020-10-09 13:04:06,847 INFO L673 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 [2020-10-09 13:04:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-09 13:04:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-09 13:04:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-09 13:04:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-09 13:04:06,882 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-09 13:04:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:06,882 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-09 13:04:06,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-09 13:04:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:04:06,884 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:06,884 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:06,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 13:04:06,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-10-09 13:04:06,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:06,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73154370] [2020-10-09 13:04:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:06,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73154370] [2020-10-09 13:04:06,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:06,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:06,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187666122] [2020-10-09 13:04:06,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:06,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:06,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:06,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:06,938 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-10-09 13:04:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:06,964 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-10-09 13:04:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:06,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-09 13:04:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:06,973 INFO L225 Difference]: With dead ends: 1042 [2020-10-09 13:04:06,973 INFO L226 Difference]: Without dead ends: 898 [2020-10-09 13:04:06,973 INFO L673 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 [2020-10-09 13:04:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-09 13:04:06,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-10-09 13:04:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-09 13:04:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-10-09 13:04:07,004 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-10-09 13:04:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:07,004 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-10-09 13:04:07,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-10-09 13:04:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 13:04:07,006 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:07,006 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:07,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 13:04:07,007 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:07,007 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-10-09 13:04:07,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:07,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884322540] [2020-10-09 13:04:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:07,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884322540] [2020-10-09 13:04:07,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:07,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:07,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339950909] [2020-10-09 13:04:07,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:07,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:07,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:07,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:07,059 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-10-09 13:04:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:07,085 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-10-09 13:04:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:07,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-09 13:04:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:07,094 INFO L225 Difference]: With dead ends: 952 [2020-10-09 13:04:07,094 INFO L226 Difference]: Without dead ends: 844 [2020-10-09 13:04:07,095 INFO L673 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 [2020-10-09 13:04:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-09 13:04:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-10-09 13:04:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-09 13:04:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-10-09 13:04:07,155 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-10-09 13:04:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:07,156 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-10-09 13:04:07,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-10-09 13:04:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:04:07,158 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:07,158 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:07,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 13:04:07,159 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-10-09 13:04:07,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:07,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639418610] [2020-10-09 13:04:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:07,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639418610] [2020-10-09 13:04:07,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:07,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:07,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183010115] [2020-10-09 13:04:07,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:07,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:07,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:07,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:07,277 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-10-09 13:04:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:07,348 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-10-09 13:04:07,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:07,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 13:04:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:07,352 INFO L225 Difference]: With dead ends: 1063 [2020-10-09 13:04:07,353 INFO L226 Difference]: Without dead ends: 472 [2020-10-09 13:04:07,353 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-09 13:04:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-10-09 13:04:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-09 13:04:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-10-09 13:04:07,370 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-10-09 13:04:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:07,371 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-10-09 13:04:07,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-10-09 13:04:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 13:04:07,372 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:07,373 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:07,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 13:04:07,373 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:07,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:07,373 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-10-09 13:04:07,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:07,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403267584] [2020-10-09 13:04:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:07,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403267584] [2020-10-09 13:04:07,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:07,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:07,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224325600] [2020-10-09 13:04:07,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:07,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:07,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:07,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:07,461 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-10-09 13:04:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:07,508 INFO L93 Difference]: Finished difference Result 634 states and 1979 transitions. [2020-10-09 13:04:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:07,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-09 13:04:07,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:07,510 INFO L225 Difference]: With dead ends: 634 [2020-10-09 13:04:07,511 INFO L226 Difference]: Without dead ends: 292 [2020-10-09 13:04:07,512 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:07,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-09 13:04:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-10-09 13:04:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-09 13:04:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-10-09 13:04:07,521 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-10-09 13:04:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:07,522 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-10-09 13:04:07,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-10-09 13:04:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 13:04:07,523 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:07,523 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:07,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 13:04:07,523 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash -670734284, now seen corresponding path program 1 times [2020-10-09 13:04:07,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:07,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246721695] [2020-10-09 13:04:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:07,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246721695] [2020-10-09 13:04:07,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:07,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:07,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967137999] [2020-10-09 13:04:07,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:07,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:07,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:07,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:07,607 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 5 states. [2020-10-09 13:04:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:07,655 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2020-10-09 13:04:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:07,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-09 13:04:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:07,657 INFO L225 Difference]: With dead ends: 352 [2020-10-09 13:04:07,657 INFO L226 Difference]: Without dead ends: 154 [2020-10-09 13:04:07,657 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-09 13:04:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-09 13:04:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-09 13:04:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-10-09 13:04:07,667 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-10-09 13:04:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:07,668 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-10-09 13:04:07,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-10-09 13:04:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-09 13:04:07,669 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:07,669 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:07,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 13:04:07,669 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-10-09 13:04:07,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:07,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000093621] [2020-10-09 13:04:07,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:07,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000093621] [2020-10-09 13:04:07,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:07,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:07,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459378706] [2020-10-09 13:04:07,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:07,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:07,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:07,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:07,748 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-10-09 13:04:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:07,781 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-10-09 13:04:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:07,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-09 13:04:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:07,782 INFO L225 Difference]: With dead ends: 130 [2020-10-09 13:04:07,782 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 13:04:07,783 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 13:04:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 13:04:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 13:04:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 13:04:07,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-09 13:04:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:07,784 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 13:04:07,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:07,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 13:04:07,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 13:04:07,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 13:04:07,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 01:04:07 BasicIcfg [2020-10-09 13:04:07,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 13:04:07,791 INFO L168 Benchmark]: Toolchain (without parser) took 5572.48 ms. Allocated memory was 255.3 MB in the beginning and 427.8 MB in the end (delta: 172.5 MB). Free memory was 209.7 MB in the beginning and 300.1 MB in the end (delta: -90.4 MB). Peak memory consumption was 82.1 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:07,792 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 255.3 MB. Free memory is still 231.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 13:04:07,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.71 ms. Allocated memory was 255.3 MB in the beginning and 323.5 MB in the end (delta: 68.2 MB). Free memory was 209.7 MB in the beginning and 276.3 MB in the end (delta: -66.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:07,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.80 ms. Allocated memory is still 323.5 MB. Free memory was 276.3 MB in the beginning and 273.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:07,795 INFO L168 Benchmark]: Boogie Preprocessor took 26.96 ms. Allocated memory is still 323.5 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 13:04:07,800 INFO L168 Benchmark]: RCFGBuilder took 571.46 ms. Allocated memory is still 323.5 MB. Free memory was 273.8 MB in the beginning and 246.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:07,801 INFO L168 Benchmark]: TraceAbstraction took 4211.13 ms. Allocated memory was 323.5 MB in the beginning and 427.8 MB in the end (delta: 104.3 MB). Free memory was 246.9 MB in the beginning and 300.1 MB in the end (delta: -53.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:07,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 255.3 MB. Free memory is still 231.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 706.71 ms. Allocated memory was 255.3 MB in the beginning and 323.5 MB in the end (delta: 68.2 MB). Free memory was 209.7 MB in the beginning and 276.3 MB in the end (delta: -66.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.80 ms. Allocated memory is still 323.5 MB. Free memory was 276.3 MB in the beginning and 273.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.96 ms. Allocated memory is still 323.5 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 571.46 ms. Allocated memory is still 323.5 MB. Free memory was 273.8 MB in the beginning and 246.9 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4211.13 ms. Allocated memory was 323.5 MB in the beginning and 427.8 MB in the end (delta: 104.3 MB). Free memory was 246.9 MB in the beginning and 300.1 MB in the end (delta: -53.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1437 VarBasedMoverChecksPositive, 59 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 97 PlacesBefore, 41 PlacesAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 4737 MoverChecksTotal - 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 263 SDtfs, 279 SDslu, 353 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 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...