/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:20:26,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:20:26,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:20:27,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:20:27,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:20:27,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:20:27,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:20:27,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:20:27,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:20:27,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:20:27,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:20:27,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:20:27,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:20:27,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:20:27,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:20:27,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:20:27,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:20:27,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:20:27,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:20:27,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:20:27,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:20:27,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:20:27,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:20:27,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:20:27,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:20:27,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:20:27,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:20:27,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:20:27,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:20:27,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:20:27,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:20:27,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:20:27,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:20:27,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:20:27,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:20:27,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:20:27,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:20:27,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:20:27,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:20:27,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:20:27,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:20:27,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:20:27,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:20:27,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:20:27,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:20:27,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:20:27,126 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:20:27,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:20:27,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:20:27,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:20:27,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:20:27,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:20:27,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:20:27,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:20:27,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:20:27,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:20:27,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:20:27,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:20:27,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:20:27,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:20:27,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:20:27,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:20:27,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:20:27,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:20:27,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:20:27,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:20:27,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:20:27,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:20:27,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:20:27,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:20:27,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:20:27,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:20:27,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:20:27,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:20:27,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:20:27,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:20:27,427 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:20:27,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-16 11:20:27,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c9d8957c/407b82c473154aed862cea1988281c62/FLAG2a1d52362 [2020-10-16 11:20:28,042 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:20:28,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-16 11:20:28,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c9d8957c/407b82c473154aed862cea1988281c62/FLAG2a1d52362 [2020-10-16 11:20:28,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c9d8957c/407b82c473154aed862cea1988281c62 [2020-10-16 11:20:28,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:20:28,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:20:28,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:28,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:20:28,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:20:28,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:28" (1/1) ... [2020-10-16 11:20:28,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d61f71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:28, skipping insertion in model container [2020-10-16 11:20:28,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:20:28" (1/1) ... [2020-10-16 11:20:28,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:20:28,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:20:28,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:28,923 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:20:29,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:20:29,104 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:20:29,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29 WrapperNode [2020-10-16 11:20:29,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:20:29,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:29,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:20:29,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:20:29,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:20:29,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:20:29,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:20:29,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:20:29,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... [2020-10-16 11:20:29,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:20:29,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:20:29,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:20:29,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:20:29,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:20:29,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:20:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:20:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:20:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:20:29,266 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:20:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:20:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:20:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:20:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:20:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:20:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:20:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:20:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:20:29,271 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:20:29,609 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:20:29,610 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:20:29,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:29 BoogieIcfgContainer [2020-10-16 11:20:29,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:20:29,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:20:29,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:20:29,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:20:29,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:20:28" (1/3) ... [2020-10-16 11:20:29,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f655b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:29, skipping insertion in model container [2020-10-16 11:20:29,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:20:29" (2/3) ... [2020-10-16 11:20:29,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f655b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:20:29, skipping insertion in model container [2020-10-16 11:20:29,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:20:29" (3/3) ... [2020-10-16 11:20:29,624 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-10-16 11:20:29,634 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:20:29,634 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:20:29,644 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:20:29,645 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:20:29,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,682 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,701 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,705 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,705 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,706 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:20:29,708 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:20:29,723 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:20:29,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:20:29,746 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:20:29,746 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:20:29,746 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:20:29,746 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:20:29,746 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:20:29,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:20:29,747 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:20:29,761 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:20:29,764 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:20:29,767 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:20:29,768 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:20:29,814 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:20:29,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:20:29,820 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 11:20:29,824 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:20:31,214 INFO L132 LiptonReduction]: Checked pairs total: 2334 [2020-10-16 11:20:31,214 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 11:20:31,221 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 11:20:31,251 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 11:20:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 11:20:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:20:31,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:31,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:31,262 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:31,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-10-16 11:20:31,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:31,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294794669] [2020-10-16 11:20:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:31,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294794669] [2020-10-16 11:20:31,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:31,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:31,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789642473] [2020-10-16 11:20:31,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:20:31,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:31,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:20:31,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:20:31,502 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 11:20:31,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:31,535 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 11:20:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:20:31,536 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 11:20:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:31,555 INFO L225 Difference]: With dead ends: 362 [2020-10-16 11:20:31,555 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 11:20:31,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:20:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 11:20:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 11:20:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 11:20:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 11:20:31,633 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 11:20:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:31,634 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 11:20:31,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:20:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 11:20:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:20:31,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:31,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:31,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:20:31,637 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:31,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-10-16 11:20:31,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:31,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578205525] [2020-10-16 11:20:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:31,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578205525] [2020-10-16 11:20:31,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:31,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:20:31,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552656716] [2020-10-16 11:20:31,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:31,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:31,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:31,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:31,772 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 11:20:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:31,804 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-16 11:20:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:31,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:20:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:31,809 INFO L225 Difference]: With dead ends: 330 [2020-10-16 11:20:31,809 INFO L226 Difference]: Without dead ends: 266 [2020-10-16 11:20:31,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-16 11:20:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-16 11:20:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-16 11:20:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-16 11:20:31,838 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-16 11:20:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:31,839 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-16 11:20:31,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-16 11:20:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:20:31,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:31,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:31,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:20:31,841 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:31,842 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-10-16 11:20:31,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:31,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744558532] [2020-10-16 11:20:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:31,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744558532] [2020-10-16 11:20:31,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:31,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:31,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510491072] [2020-10-16 11:20:31,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:31,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:31,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:31,914 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-10-16 11:20:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:31,961 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-10-16 11:20:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:31,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-16 11:20:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:31,963 INFO L225 Difference]: With dead ends: 314 [2020-10-16 11:20:31,964 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 11:20:31,964 INFO L677 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 [2020-10-16 11:20:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 11:20:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-16 11:20:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-16 11:20:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-10-16 11:20:31,973 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 10 [2020-10-16 11:20:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:31,974 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-10-16 11:20:31,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-10-16 11:20:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:20:31,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:31,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:31,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:20:31,976 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:31,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-10-16 11:20:31,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:31,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416289619] [2020-10-16 11:20:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:32,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416289619] [2020-10-16 11:20:32,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:32,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:32,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045756475] [2020-10-16 11:20:32,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:32,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:32,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:32,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:32,064 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-10-16 11:20:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:32,100 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-10-16 11:20:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:32,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:20:32,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:32,102 INFO L225 Difference]: With dead ends: 183 [2020-10-16 11:20:32,102 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 11:20:32,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 11:20:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-16 11:20:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 11:20:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-10-16 11:20:32,109 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-10-16 11:20:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:32,109 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-10-16 11:20:32,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-10-16 11:20:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:20:32,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:32,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:32,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:20:32,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-10-16 11:20:32,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:32,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252405460] [2020-10-16 11:20:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:32,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252405460] [2020-10-16 11:20:32,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:32,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:20:32,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286838395] [2020-10-16 11:20:32,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:32,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:32,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:32,161 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 5 states. [2020-10-16 11:20:32,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:32,200 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-10-16 11:20:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:20:32,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:20:32,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:32,201 INFO L225 Difference]: With dead ends: 129 [2020-10-16 11:20:32,201 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 11:20:32,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 11:20:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-16 11:20:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 11:20:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-10-16 11:20:32,206 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-10-16 11:20:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:32,206 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-10-16 11:20:32,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-10-16 11:20:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:20:32,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:32,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:32,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:20:32,208 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:32,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:32,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-10-16 11:20:32,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:32,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023480166] [2020-10-16 11:20:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:32,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023480166] [2020-10-16 11:20:32,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:32,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:20:32,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360234408] [2020-10-16 11:20:32,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:20:32,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:32,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:20:32,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:20:32,275 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-10-16 11:20:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:32,348 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-10-16 11:20:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:20:32,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 11:20:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:32,363 INFO L225 Difference]: With dead ends: 93 [2020-10-16 11:20:32,363 INFO L226 Difference]: Without dead ends: 85 [2020-10-16 11:20:32,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:20:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-16 11:20:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-16 11:20:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-16 11:20:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-10-16 11:20:32,368 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-10-16 11:20:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:32,369 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-10-16 11:20:32,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:20:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-10-16 11:20:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:20:32,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:32,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:32,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:20:32,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-10-16 11:20:32,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:32,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086717612] [2020-10-16 11:20:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086717612] [2020-10-16 11:20:32,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:32,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:20:32,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636495966] [2020-10-16 11:20:32,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:20:32,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:32,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:20:32,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:20:32,454 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-10-16 11:20:32,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:32,485 INFO L93 Difference]: Finished difference Result 117 states and 236 transitions. [2020-10-16 11:20:32,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:20:32,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 11:20:32,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:32,486 INFO L225 Difference]: With dead ends: 117 [2020-10-16 11:20:32,487 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 11:20:32,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 11:20:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 11:20:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 11:20:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-16 11:20:32,490 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-10-16 11:20:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:32,490 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-16 11:20:32,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:20:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-16 11:20:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 11:20:32,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:20:32,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:20:32,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:20:32,492 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:20:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:20:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 2 times [2020-10-16 11:20:32,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:20:32,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506463405] [2020-10-16 11:20:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:20:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:20:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:20:32,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506463405] [2020-10-16 11:20:32,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:20:32,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:20:32,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109159725] [2020-10-16 11:20:32,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:20:32,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:20:32,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:20:32,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:20:32,591 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-16 11:20:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:20:32,614 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-16 11:20:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:20:32,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-16 11:20:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:20:32,614 INFO L225 Difference]: With dead ends: 54 [2020-10-16 11:20:32,615 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:20:32,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:20:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:20:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:20:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:20:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:20:32,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 11:20:32,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:20:32,616 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:20:32,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:20:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:20:32,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:20:32,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:20:32,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:20:32 BasicIcfg [2020-10-16 11:20:32,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:20:32,629 INFO L168 Benchmark]: Toolchain (without parser) took 4242.07 ms. Allocated memory was 140.5 MB in the beginning and 246.9 MB in the end (delta: 106.4 MB). Free memory was 101.8 MB in the beginning and 187.2 MB in the end (delta: -85.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:32,630 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:20:32,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.90 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 162.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:32,635 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.43 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 160.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:32,636 INFO L168 Benchmark]: Boogie Preprocessor took 34.29 ms. Allocated memory is still 204.5 MB. Free memory was 160.1 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:32,641 INFO L168 Benchmark]: RCFGBuilder took 417.24 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 135.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:20:32,642 INFO L168 Benchmark]: TraceAbstraction took 3013.10 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 135.8 MB in the beginning and 187.2 MB in the end (delta: -51.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:20:32,653 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.90 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 162.0 MB in the end (delta: -60.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.43 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 160.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.29 ms. Allocated memory is still 204.5 MB. Free memory was 160.1 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.24 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 135.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3013.10 ms. Allocated memory was 204.5 MB in the beginning and 246.9 MB in the end (delta: 42.5 MB). Free memory was 135.8 MB in the beginning and 187.2 MB in the end (delta: -51.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 829 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 78 PlacesBefore, 32 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2334 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 175 SDtfs, 173 SDslu, 270 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 2932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...