/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/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 12:56:55,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 12:56:55,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 12:56:55,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 12:56:55,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 12:56:55,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 12:56:55,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 12:56:55,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 12:56:55,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 12:56:55,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 12:56:55,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 12:56:55,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 12:56:55,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 12:56:55,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 12:56:55,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 12:56:55,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 12:56:55,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 12:56:55,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 12:56:55,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 12:56:55,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 12:56:55,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 12:56:55,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 12:56:55,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 12:56:55,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 12:56:55,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 12:56:55,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 12:56:55,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 12:56:55,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 12:56:55,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 12:56:55,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 12:56:55,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 12:56:55,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 12:56:55,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 12:56:55,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 12:56:55,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 12:56:55,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 12:56:55,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 12:56:55,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 12:56:55,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 12:56:55,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 12:56:55,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 12:56:55,977 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 12:56:56,015 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 12:56:56,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 12:56:56,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 12:56:56,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 12:56:56,017 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 12:56:56,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 12:56:56,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 12:56:56,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 12:56:56,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 12:56:56,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 12:56:56,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 12:56:56,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 12:56:56,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 12:56:56,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 12:56:56,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 12:56:56,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 12:56:56,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 12:56:56,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 12:56:56,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 12:56:56,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 12:56:56,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 12:56:56,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 12:56:56,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 12:56:56,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 12:56:56,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 12:56:56,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 12:56:56,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 12:56:56,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 12:56:56,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 12:56:56,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 12:56:56,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 12:56:56,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 12:56:56,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 12:56:56,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 12:56:56,312 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 12:56:56,313 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-09 12:56:56,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e781f72/066612bd7f744292abbec34a85bf0da1/FLAGc3f3e4914 [2020-10-09 12:56:56,964 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 12:56:56,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-10-09 12:56:56,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e781f72/066612bd7f744292abbec34a85bf0da1/FLAGc3f3e4914 [2020-10-09 12:56:57,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e781f72/066612bd7f744292abbec34a85bf0da1 [2020-10-09 12:56:57,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 12:56:57,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 12:56:57,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 12:56:57,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 12:56:57,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 12:56:57,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:57,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712fc55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57, skipping insertion in model container [2020-10-09 12:56:57,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:57,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 12:56:57,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 12:56:57,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:56:57,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 12:56:57,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 12:56:57,952 INFO L208 MainTranslator]: Completed translation [2020-10-09 12:56:57,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57 WrapperNode [2020-10-09 12:56:57,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 12:56:57,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 12:56:57,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 12:56:57,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 12:56:57,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:57,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 12:56:58,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 12:56:58,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 12:56:58,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 12:56:58,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (1/1) ... [2020-10-09 12:56:58,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 12:56:58,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 12:56:58,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 12:56:58,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 12:56:58,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (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 12:56:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 12:56:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 12:56:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 12:56:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 12:56:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 12:56:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 12:56:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 12:56:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 12:56:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 12:56:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 12:56:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 12:56:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 12:56:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 12:56:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 12:56:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 12:56:58,100 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 12:56:58,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 12:56:58,474 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 12:56:58,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:56:58 BoogieIcfgContainer [2020-10-09 12:56:58,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 12:56:58,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 12:56:58,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 12:56:58,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 12:56:58,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 12:56:57" (1/3) ... [2020-10-09 12:56:58,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:56:58, skipping insertion in model container [2020-10-09 12:56:58,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 12:56:57" (2/3) ... [2020-10-09 12:56:58,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 12:56:58, skipping insertion in model container [2020-10-09 12:56:58,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 12:56:58" (3/3) ... [2020-10-09 12:56:58,486 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-10-09 12:56:58,498 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 12:56:58,499 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 12:56:58,507 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 12:56:58,508 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 12:56:58,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,540 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,541 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,541 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,543 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,545 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,545 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,545 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,545 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,546 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,546 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,550 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,550 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,550 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,550 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,556 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 12:56:58,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 12:56:58,605 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 12:56:58,605 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 12:56:58,605 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 12:56:58,605 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 12:56:58,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 12:56:58,606 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 12:56:58,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 12:56:58,606 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 12:56:58,619 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 12:56:58,622 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-09 12:56:58,625 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-09 12:56:58,627 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-09 12:56:58,676 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-09 12:56:58,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 12:56:58,682 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-09 12:56:58,686 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-09 12:57:00,231 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-09 12:57:00,232 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-09 12:57:00,239 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-09 12:57:00,299 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-09 12:57:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-09 12:57:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 12:57:00,313 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:00,314 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:00,314 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:00,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:00,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-09 12:57:00,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:00,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506452865] [2020-10-09 12:57:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:00,518 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 12:57:00,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506452865] [2020-10-09 12:57:00,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:00,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:00,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954156833] [2020-10-09 12:57:00,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 12:57:00,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:00,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 12:57:00,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 12:57:00,544 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-09 12:57:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:00,606 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-09 12:57:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 12:57:00,608 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-09 12:57:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:00,637 INFO L225 Difference]: With dead ends: 850 [2020-10-09 12:57:00,637 INFO L226 Difference]: Without dead ends: 706 [2020-10-09 12:57:00,638 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 12:57:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-09 12:57:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-09 12:57:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-09 12:57:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-09 12:57:00,778 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-09 12:57:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:00,779 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-09 12:57:00,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 12:57:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-09 12:57:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 12:57:00,783 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:00,783 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:00,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 12:57:00,783 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:00,784 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-09 12:57:00,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:00,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050504137] [2020-10-09 12:57:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:00,933 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 12:57:00,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050504137] [2020-10-09 12:57:00,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:00,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:00,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702981220] [2020-10-09 12:57:00,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:00,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:00,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:00,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:00,938 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-09 12:57:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:00,989 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-09 12:57:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:00,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-09 12:57:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:00,997 INFO L225 Difference]: With dead ends: 802 [2020-10-09 12:57:00,997 INFO L226 Difference]: Without dead ends: 658 [2020-10-09 12:57:00,998 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 12:57:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-09 12:57:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-09 12:57:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-09 12:57:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-09 12:57:01,028 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-09 12:57:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,028 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-09 12:57:01,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-09 12:57:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 12:57:01,031 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,031 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 12:57:01,032 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-09 12:57:01,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723832475] [2020-10-09 12:57:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,133 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 12:57:01,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723832475] [2020-10-09 12:57:01,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:01,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713476699] [2020-10-09 12:57:01,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:01,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:01,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:01,136 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-09 12:57:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:01,164 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-09 12:57:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:01,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-09 12:57:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:01,170 INFO L225 Difference]: With dead ends: 718 [2020-10-09 12:57:01,170 INFO L226 Difference]: Without dead ends: 598 [2020-10-09 12:57:01,171 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 12:57:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-09 12:57:01,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-09 12:57:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-09 12:57:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-09 12:57:01,195 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-09 12:57:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,195 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-09 12:57:01,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-09 12:57:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 12:57:01,197 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,197 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 12:57:01,198 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-09 12:57:01,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769617698] [2020-10-09 12:57:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,272 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 12:57:01,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769617698] [2020-10-09 12:57:01,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 12:57:01,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687154231] [2020-10-09 12:57:01,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:01,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:01,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:01,274 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-10-09 12:57:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:01,301 INFO L93 Difference]: Finished difference Result 634 states and 2058 transitions. [2020-10-09 12:57:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:01,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-09 12:57:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:01,307 INFO L225 Difference]: With dead ends: 634 [2020-10-09 12:57:01,307 INFO L226 Difference]: Without dead ends: 562 [2020-10-09 12:57:01,308 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 12:57:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-09 12:57:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-10-09 12:57:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-09 12:57:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-10-09 12:57:01,330 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-10-09 12:57:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,330 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-10-09 12:57:01,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-10-09 12:57:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 12:57:01,332 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,333 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 12:57:01,333 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,333 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-10-09 12:57:01,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130254574] [2020-10-09 12:57:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:01,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130254574] [2020-10-09 12:57:01,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:01,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818912502] [2020-10-09 12:57:01,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:01,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:01,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:01,387 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-10-09 12:57:01,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:01,443 INFO L93 Difference]: Finished difference Result 834 states and 2710 transitions. [2020-10-09 12:57:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 12:57:01,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-09 12:57:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:01,447 INFO L225 Difference]: With dead ends: 834 [2020-10-09 12:57:01,447 INFO L226 Difference]: Without dead ends: 450 [2020-10-09 12:57:01,448 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 12:57:01,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-09 12:57:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-10-09 12:57:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-09 12:57:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-10-09 12:57:01,465 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-10-09 12:57:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,465 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-10-09 12:57:01,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-10-09 12:57:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:01,467 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,467 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 12:57:01,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,468 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-10-09 12:57:01,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190998157] [2020-10-09 12:57:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,516 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 12:57:01,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190998157] [2020-10-09 12:57:01,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 12:57:01,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859248546] [2020-10-09 12:57:01,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:01,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:01,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:01,518 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 5 states. [2020-10-09 12:57:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:01,586 INFO L93 Difference]: Finished difference Result 834 states and 2560 transitions. [2020-10-09 12:57:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 12:57:01,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 12:57:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:01,590 INFO L225 Difference]: With dead ends: 834 [2020-10-09 12:57:01,591 INFO L226 Difference]: Without dead ends: 410 [2020-10-09 12:57:01,591 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-09 12:57:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-09 12:57:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 346. [2020-10-09 12:57:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-09 12:57:01,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1030 transitions. [2020-10-09 12:57:01,604 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1030 transitions. Word has length 15 [2020-10-09 12:57:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,605 INFO L481 AbstractCegarLoop]: Abstraction has 346 states and 1030 transitions. [2020-10-09 12:57:01,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:01,605 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1030 transitions. [2020-10-09 12:57:01,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:01,606 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,606 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 12:57:01,607 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,607 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-10-09 12:57:01,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485521147] [2020-10-09 12:57:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,645 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 12:57:01,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485521147] [2020-10-09 12:57:01,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:01,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292918996] [2020-10-09 12:57:01,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:01,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:01,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:01,647 INFO L87 Difference]: Start difference. First operand 346 states and 1030 transitions. Second operand 4 states. [2020-10-09 12:57:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:01,675 INFO L93 Difference]: Finished difference Result 494 states and 1402 transitions. [2020-10-09 12:57:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:01,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-09 12:57:01,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:01,679 INFO L225 Difference]: With dead ends: 494 [2020-10-09 12:57:01,679 INFO L226 Difference]: Without dead ends: 370 [2020-10-09 12:57:01,680 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-10-09 12:57:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-10-09 12:57:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-09 12:57:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-10-09 12:57:01,691 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-10-09 12:57:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,692 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-10-09 12:57:01,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-10-09 12:57:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:01,693 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,693 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 12:57:01,693 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,694 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-10-09 12:57:01,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677321873] [2020-10-09 12:57:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,737 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 12:57:01,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677321873] [2020-10-09 12:57:01,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:01,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121896360] [2020-10-09 12:57:01,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:01,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:01,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:01,739 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-10-09 12:57:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:01,774 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-10-09 12:57:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:01,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 12:57:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:01,777 INFO L225 Difference]: With dead ends: 454 [2020-10-09 12:57:01,777 INFO L226 Difference]: Without dead ends: 238 [2020-10-09 12:57:01,778 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:01,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-09 12:57:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-10-09 12:57:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-09 12:57:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-10-09 12:57:01,786 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-10-09 12:57:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,787 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-10-09 12:57:01,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-10-09 12:57:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 12:57:01,788 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,788 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 12:57:01,788 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,789 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-09 12:57:01,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404550288] [2020-10-09 12:57:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,843 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 12:57:01,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404550288] [2020-10-09 12:57:01,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 12:57:01,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748428502] [2020-10-09 12:57:01,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 12:57:01,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 12:57:01,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 12:57:01,845 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-10-09 12:57:01,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:01,881 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-10-09 12:57:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 12:57:01,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-09 12:57:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:01,883 INFO L225 Difference]: With dead ends: 283 [2020-10-09 12:57:01,884 INFO L226 Difference]: Without dead ends: 214 [2020-10-09 12:57:01,884 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:01,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-09 12:57:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-09 12:57:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-09 12:57:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-10-09 12:57:01,892 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-10-09 12:57:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:01,892 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-10-09 12:57:01,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 12:57:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-10-09 12:57:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 12:57:01,894 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:01,894 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:01,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 12:57:01,894 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:01,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-09 12:57:01,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:01,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186504636] [2020-10-09 12:57:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:01,945 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 12:57:01,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186504636] [2020-10-09 12:57:01,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:01,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 12:57:01,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343904441] [2020-10-09 12:57:01,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:01,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:01,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:01,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:01,947 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-10-09 12:57:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:02,001 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-10-09 12:57:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 12:57:02,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-09 12:57:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:02,003 INFO L225 Difference]: With dead ends: 211 [2020-10-09 12:57:02,003 INFO L226 Difference]: Without dead ends: 158 [2020-10-09 12:57:02,004 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:57:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-09 12:57:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-09 12:57:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-09 12:57:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-10-09 12:57:02,011 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-10-09 12:57:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:02,012 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-10-09 12:57:02,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-10-09 12:57:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 12:57:02,013 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:02,013 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 12:57:02,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-09 12:57:02,013 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:02,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-09 12:57:02,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:02,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735116846] [2020-10-09 12:57:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:02,075 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 12:57:02,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735116846] [2020-10-09 12:57:02,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:02,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-09 12:57:02,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353329551] [2020-10-09 12:57:02,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 12:57:02,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:02,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 12:57:02,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-09 12:57:02,077 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-10-09 12:57:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:02,132 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-10-09 12:57:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 12:57:02,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-09 12:57:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:02,133 INFO L225 Difference]: With dead ends: 134 [2020-10-09 12:57:02,133 INFO L226 Difference]: Without dead ends: 95 [2020-10-09 12:57:02,134 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-09 12:57:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-09 12:57:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-09 12:57:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-10-09 12:57:02,137 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-10-09 12:57:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:02,137 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-10-09 12:57:02,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 12:57:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-10-09 12:57:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 12:57:02,138 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:02,138 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:02,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-09 12:57:02,139 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:02,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:02,139 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-09 12:57:02,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:02,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542246591] [2020-10-09 12:57:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 12:57:02,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542246591] [2020-10-09 12:57:02,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:02,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-09 12:57:02,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220118674] [2020-10-09 12:57:02,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 12:57:02,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:02,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 12:57:02,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 12:57:02,182 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-10-09 12:57:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:02,212 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-10-09 12:57:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 12:57:02,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-09 12:57:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:02,214 INFO L225 Difference]: With dead ends: 109 [2020-10-09 12:57:02,214 INFO L226 Difference]: Without dead ends: 93 [2020-10-09 12:57:02,214 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-09 12:57:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-09 12:57:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-09 12:57:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-10-09 12:57:02,218 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-10-09 12:57:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:02,218 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-10-09 12:57:02,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 12:57:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-10-09 12:57:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-09 12:57:02,219 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 12:57:02,219 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 12:57:02,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-09 12:57:02,219 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 12:57:02,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 12:57:02,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-09 12:57:02,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 12:57:02,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148993872] [2020-10-09 12:57:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 12:57:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 12:57:02,283 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 12:57:02,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148993872] [2020-10-09 12:57:02,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 12:57:02,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-09 12:57:02,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869497100] [2020-10-09 12:57:02,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 12:57:02,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 12:57:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 12:57:02,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-09 12:57:02,285 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-10-09 12:57:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 12:57:02,330 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-10-09 12:57:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 12:57:02,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-09 12:57:02,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 12:57:02,331 INFO L225 Difference]: With dead ends: 81 [2020-10-09 12:57:02,331 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 12:57:02,332 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-09 12:57:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 12:57:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 12:57:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 12:57:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 12:57:02,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-09 12:57:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 12:57:02,333 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 12:57:02,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 12:57:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 12:57:02,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 12:57:02,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-09 12:57:02,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 12:57:02 BasicIcfg [2020-10-09 12:57:02,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 12:57:02,340 INFO L168 Benchmark]: Toolchain (without parser) took 5086.11 ms. Allocated memory was 253.2 MB in the beginning and 432.0 MB in the end (delta: 178.8 MB). Free memory was 208.3 MB in the beginning and 201.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 185.8 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:02,341 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 12:57:02,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.35 ms. Allocated memory was 253.2 MB in the beginning and 365.4 MB in the end (delta: 112.2 MB). Free memory was 208.3 MB in the beginning and 327.0 MB in the end (delta: -118.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:02,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.33 ms. Allocated memory is still 365.4 MB. Free memory is still 327.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 12:57:02,343 INFO L168 Benchmark]: Boogie Preprocessor took 28.53 ms. Allocated memory is still 365.4 MB. Free memory was 327.0 MB in the beginning and 323.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:02,344 INFO L168 Benchmark]: RCFGBuilder took 443.99 ms. Allocated memory is still 365.4 MB. Free memory was 323.4 MB in the beginning and 298.8 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:02,345 INFO L168 Benchmark]: TraceAbstraction took 3859.41 ms. Allocated memory was 365.4 MB in the beginning and 432.0 MB in the end (delta: 66.6 MB). Free memory was 298.8 MB in the beginning and 201.3 MB in the end (delta: 97.6 MB). Peak memory consumption was 164.2 MB. Max. memory is 14.2 GB. [2020-10-09 12:57:02,349 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 698.35 ms. Allocated memory was 253.2 MB in the beginning and 365.4 MB in the end (delta: 112.2 MB). Free memory was 208.3 MB in the beginning and 327.0 MB in the end (delta: -118.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.33 ms. Allocated memory is still 365.4 MB. Free memory is still 327.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.53 ms. Allocated memory is still 365.4 MB. Free memory was 327.0 MB in the beginning and 323.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.2 GB. * RCFGBuilder took 443.99 ms. Allocated memory is still 365.4 MB. Free memory was 323.4 MB in the beginning and 298.8 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3859.41 ms. Allocated memory was 365.4 MB in the beginning and 432.0 MB in the end (delta: 66.6 MB). Free memory was 298.8 MB in the beginning and 201.3 MB in the end (delta: 97.6 MB). Peak memory consumption was 164.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 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, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 347 SDtfs, 346 SDslu, 602 SDs, 0 SdLazy, 217 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 7404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...