/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 13:04:09,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 13:04:09,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 13:04:09,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 13:04:09,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 13:04:09,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 13:04:09,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 13:04:09,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 13:04:09,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 13:04:09,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 13:04:09,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 13:04:09,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 13:04:09,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 13:04:09,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 13:04:09,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 13:04:09,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 13:04:09,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 13:04:09,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 13:04:09,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 13:04:09,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 13:04:09,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 13:04:09,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 13:04:09,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 13:04:09,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 13:04:09,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 13:04:09,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 13:04:09,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 13:04:09,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 13:04:09,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 13:04:09,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 13:04:09,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 13:04:09,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 13:04:09,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 13:04:09,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 13:04:09,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 13:04:09,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 13:04:09,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 13:04:09,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 13:04:09,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 13:04:09,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 13:04:09,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 13:04:09,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-09 13:04:09,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 13:04:09,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 13:04:09,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 13:04:09,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 13:04:09,117 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 13:04:09,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 13:04:09,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 13:04:09,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 13:04:09,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 13:04:09,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 13:04:09,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 13:04:09,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 13:04:09,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 13:04:09,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 13:04:09,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 13:04:09,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 13:04:09,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 13:04:09,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 13:04:09,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 13:04:09,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 13:04:09,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 13:04:09,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 13:04:09,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 13:04:09,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 13:04:09,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 13:04:09,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-09 13:04:09,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 13:04:09,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-09 13:04:09,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-09 13:04:09,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 13:04:09,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 13:04:09,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 13:04:09,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 13:04:09,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 13:04:09,456 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 13:04:09,457 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-09 13:04:09,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a85c1a8/cafd9cfb48134f33be62a534463f4b1f/FLAG796e9e594 [2020-10-09 13:04:10,078 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 13:04:10,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-10-09 13:04:10,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a85c1a8/cafd9cfb48134f33be62a534463f4b1f/FLAG796e9e594 [2020-10-09 13:04:10,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a85c1a8/cafd9cfb48134f33be62a534463f4b1f [2020-10-09 13:04:10,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 13:04:10,366 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 13:04:10,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 13:04:10,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 13:04:10,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 13:04:10,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:04:10" (1/1) ... [2020-10-09 13:04:10,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60bcb2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:10, skipping insertion in model container [2020-10-09 13:04:10,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 01:04:10" (1/1) ... [2020-10-09 13:04:10,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 13:04:10,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 13:04:10,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:04:10,776 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 13:04:10,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 13:04:11,044 INFO L208 MainTranslator]: Completed translation [2020-10-09 13:04:11,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11 WrapperNode [2020-10-09 13:04:11,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 13:04:11,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 13:04:11,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 13:04:11,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 13:04:11,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 13:04:11,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 13:04:11,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 13:04:11,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 13:04:11,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... [2020-10-09 13:04:11,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 13:04:11,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 13:04:11,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 13:04:11,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 13:04:11,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 13:04:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 13:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 13:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 13:04:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 13:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 13:04:11,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 13:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 13:04:11,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 13:04:11,197 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 13:04:11,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 13:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-09 13:04:11,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-09 13:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 13:04:11,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 13:04:11,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 13:04:11,200 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 13:04:11,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 13:04:11,608 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 13:04:11,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:04:11 BoogieIcfgContainer [2020-10-09 13:04:11,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 13:04:11,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 13:04:11,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 13:04:11,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 13:04:11,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 01:04:10" (1/3) ... [2020-10-09 13:04:11,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22c1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:04:11, skipping insertion in model container [2020-10-09 13:04:11,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 01:04:11" (2/3) ... [2020-10-09 13:04:11,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22c1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 01:04:11, skipping insertion in model container [2020-10-09 13:04:11,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 01:04:11" (3/3) ... [2020-10-09 13:04:11,620 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-10-09 13:04:11,632 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-09 13:04:11,632 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 13:04:11,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 13:04:11,641 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 13:04:11,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,672 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,676 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,676 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,677 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,678 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,678 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,678 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,679 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,679 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,693 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,693 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,694 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,694 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,696 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,699 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 13:04:11,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-09 13:04:11,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 13:04:11,737 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-09 13:04:11,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 13:04:11,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 13:04:11,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 13:04:11,738 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 13:04:11,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 13:04:11,738 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 13:04:11,753 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-09 13:04:11,756 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:11,759 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:11,761 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-09 13:04:11,814 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-09 13:04:11,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 13:04:11,821 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-10-09 13:04:11,825 INFO L117 LiptonReduction]: Number of co-enabled transitions 2016 [2020-10-09 13:04:13,485 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-09 13:04:13,555 INFO L132 LiptonReduction]: Checked pairs total: 4737 [2020-10-09 13:04:13,555 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-09 13:04:13,562 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-10-09 13:04:13,665 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-10-09 13:04:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-10-09 13:04:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-09 13:04:13,678 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:13,679 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:13,680 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:13,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:13,686 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-10-09 13:04:13,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:13,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123172068] [2020-10-09 13:04:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:13,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123172068] [2020-10-09 13:04:13,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:13,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:13,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974016730] [2020-10-09 13:04:13,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-09 13:04:13,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:13,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-09 13:04:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 13:04:13,908 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-10-09 13:04:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:13,975 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-10-09 13:04:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-09 13:04:13,976 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-09 13:04:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:14,013 INFO L225 Difference]: With dead ends: 1450 [2020-10-09 13:04:14,014 INFO L226 Difference]: Without dead ends: 1194 [2020-10-09 13:04:14,015 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-09 13:04:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-10-09 13:04:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-10-09 13:04:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-10-09 13:04:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-10-09 13:04:14,150 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-10-09 13:04:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:14,151 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-10-09 13:04:14,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-09 13:04:14,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-10-09 13:04:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-09 13:04:14,154 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:14,155 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:14,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-09 13:04:14,155 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:14,156 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-10-09 13:04:14,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:14,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366296908] [2020-10-09 13:04:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:14,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366296908] [2020-10-09 13:04:14,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:14,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:14,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139847981] [2020-10-09 13:04:14,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:14,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:14,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:14,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:14,321 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-10-09 13:04:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:14,376 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-10-09 13:04:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:14,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-09 13:04:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:14,387 INFO L225 Difference]: With dead ends: 1322 [2020-10-09 13:04:14,387 INFO L226 Difference]: Without dead ends: 1066 [2020-10-09 13:04:14,388 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:14,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-10-09 13:04:14,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-10-09 13:04:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-09 13:04:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-10-09 13:04:14,430 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-10-09 13:04:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:14,431 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-10-09 13:04:14,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-10-09 13:04:14,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-09 13:04:14,438 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:14,438 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:14,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-09 13:04:14,438 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:14,439 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-10-09 13:04:14,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:14,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147160186] [2020-10-09 13:04:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:14,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147160186] [2020-10-09 13:04:14,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:14,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:14,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118823787] [2020-10-09 13:04:14,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:14,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:14,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:14,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:14,556 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-10-09 13:04:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:14,592 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-10-09 13:04:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:14,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-09 13:04:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:14,602 INFO L225 Difference]: With dead ends: 1162 [2020-10-09 13:04:14,602 INFO L226 Difference]: Without dead ends: 970 [2020-10-09 13:04:14,602 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-09 13:04:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-10-09 13:04:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-09 13:04:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-10-09 13:04:14,641 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-10-09 13:04:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:14,641 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-10-09 13:04:14,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-10-09 13:04:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-09 13:04:14,643 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:14,643 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:14,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-09 13:04:14,644 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:14,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:14,644 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-10-09 13:04:14,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:14,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289479853] [2020-10-09 13:04:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:14,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289479853] [2020-10-09 13:04:14,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:14,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:14,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520436996] [2020-10-09 13:04:14,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:14,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:14,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:14,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:14,701 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-10-09 13:04:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:14,727 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-10-09 13:04:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:14,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-09 13:04:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:14,735 INFO L225 Difference]: With dead ends: 1042 [2020-10-09 13:04:14,735 INFO L226 Difference]: Without dead ends: 898 [2020-10-09 13:04:14,736 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-09 13:04:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-10-09 13:04:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-09 13:04:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-10-09 13:04:14,769 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-10-09 13:04:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:14,770 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-10-09 13:04:14,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-10-09 13:04:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-09 13:04:14,772 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:14,772 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:14,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-09 13:04:14,773 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:14,773 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-10-09 13:04:14,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:14,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246824555] [2020-10-09 13:04:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:14,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246824555] [2020-10-09 13:04:14,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:14,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-09 13:04:14,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252885631] [2020-10-09 13:04:14,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-09 13:04:14,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:14,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-09 13:04:14,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-09 13:04:14,836 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-10-09 13:04:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:14,868 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-10-09 13:04:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-09 13:04:14,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-09 13:04:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:14,877 INFO L225 Difference]: With dead ends: 952 [2020-10-09 13:04:14,877 INFO L226 Difference]: Without dead ends: 844 [2020-10-09 13:04:14,877 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-09 13:04:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-10-09 13:04:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-09 13:04:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-10-09 13:04:14,911 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-10-09 13:04:14,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:14,912 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-10-09 13:04:14,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-09 13:04:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-10-09 13:04:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-09 13:04:14,915 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:14,915 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:14,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-09 13:04:14,916 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:14,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-10-09 13:04:14,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:14,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453125246] [2020-10-09 13:04:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453125246] [2020-10-09 13:04:15,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624394959] [2020-10-09 13:04:15,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,043 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-10-09 13:04:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,089 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-10-09 13:04:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-09 13:04:15,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,095 INFO L225 Difference]: With dead ends: 1063 [2020-10-09 13:04:15,095 INFO L226 Difference]: Without dead ends: 598 [2020-10-09 13:04:15,095 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-09 13:04:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-09 13:04:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-09 13:04:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1914 transitions. [2020-10-09 13:04:15,115 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1914 transitions. Word has length 15 [2020-10-09 13:04:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,115 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1914 transitions. [2020-10-09 13:04:15,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1914 transitions. [2020-10-09 13:04:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-09 13:04:15,117 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,118 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-09 13:04:15,118 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1363663410, now seen corresponding path program 1 times [2020-10-09 13:04:15,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946181327] [2020-10-09 13:04:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946181327] [2020-10-09 13:04:15,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977741117] [2020-10-09 13:04:15,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,170 INFO L87 Difference]: Start difference. First operand 598 states and 1914 transitions. Second operand 5 states. [2020-10-09 13:04:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,212 INFO L93 Difference]: Finished difference Result 712 states and 2245 transitions. [2020-10-09 13:04:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-09 13:04:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,215 INFO L225 Difference]: With dead ends: 712 [2020-10-09 13:04:15,216 INFO L226 Difference]: Without dead ends: 292 [2020-10-09 13:04:15,216 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-09 13:04:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-10-09 13:04:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-09 13:04:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-10-09 13:04:15,227 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-10-09 13:04:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,227 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-10-09 13:04:15,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-10-09 13:04:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-09 13:04:15,229 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,229 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-09 13:04:15,229 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,230 INFO L82 PathProgramCache]: Analyzing trace with hash -670734284, now seen corresponding path program 1 times [2020-10-09 13:04:15,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154495387] [2020-10-09 13:04:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154495387] [2020-10-09 13:04:15,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116357221] [2020-10-09 13:04:15,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,280 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 5 states. [2020-10-09 13:04:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,318 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2020-10-09 13:04:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-09 13:04:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,320 INFO L225 Difference]: With dead ends: 352 [2020-10-09 13:04:15,320 INFO L226 Difference]: Without dead ends: 154 [2020-10-09 13:04:15,321 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-09 13:04:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-09 13:04:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-09 13:04:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-10-09 13:04:15,327 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-10-09 13:04:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,327 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-10-09 13:04:15,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-10-09 13:04:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-09 13:04:15,328 INFO L413 BasicCegarLoop]: Found error trace [2020-10-09 13:04:15,328 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 13:04:15,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-09 13:04:15,328 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 13:04:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 13:04:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-10-09 13:04:15,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-09 13:04:15,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925482357] [2020-10-09 13:04:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-09 13:04:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 13:04:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 13:04:15,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925482357] [2020-10-09 13:04:15,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-09 13:04:15,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-09 13:04:15,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401382849] [2020-10-09 13:04:15,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 13:04:15,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-09 13:04:15,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 13:04:15,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 13:04:15,381 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-10-09 13:04:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-09 13:04:15,413 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-10-09 13:04:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 13:04:15,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-09 13:04:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-09 13:04:15,414 INFO L225 Difference]: With dead ends: 130 [2020-10-09 13:04:15,414 INFO L226 Difference]: Without dead ends: 0 [2020-10-09 13:04:15,414 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-09 13:04:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-09 13:04:15,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-09 13:04:15,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-09 13:04:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-09 13:04:15,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-09 13:04:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-09 13:04:15,416 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-09 13:04:15,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 13:04:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-09 13:04:15,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-09 13:04:15,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-09 13:04:15,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 01:04:15 BasicIcfg [2020-10-09 13:04:15,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 13:04:15,422 INFO L168 Benchmark]: Toolchain (without parser) took 5056.16 ms. Allocated memory was 250.1 MB in the beginning and 426.2 MB in the end (delta: 176.2 MB). Free memory was 204.7 MB in the beginning and 309.6 MB in the end (delta: -104.9 MB). Peak memory consumption was 71.3 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,423 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.70 ms. Allocated memory was 250.1 MB in the beginning and 310.4 MB in the end (delta: 60.3 MB). Free memory was 203.9 MB in the beginning and 266.0 MB in the end (delta: -62.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 310.4 MB. Free memory was 265.4 MB in the beginning and 263.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,425 INFO L168 Benchmark]: Boogie Preprocessor took 26.52 ms. Allocated memory is still 310.4 MB. Free memory was 263.7 MB in the beginning and 262.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,426 INFO L168 Benchmark]: RCFGBuilder took 488.22 ms. Allocated memory is still 310.4 MB. Free memory was 262.0 MB in the beginning and 236.7 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,427 INFO L168 Benchmark]: TraceAbstraction took 3808.24 ms. Allocated memory was 310.4 MB in the beginning and 426.2 MB in the end (delta: 115.9 MB). Free memory was 235.8 MB in the beginning and 309.6 MB in the end (delta: -73.7 MB). Peak memory consumption was 42.1 MB. Max. memory is 14.2 GB. [2020-10-09 13:04:15,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 250.1 MB. Free memory was 228.1 MB in the beginning and 227.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 677.70 ms. Allocated memory was 250.1 MB in the beginning and 310.4 MB in the end (delta: 60.3 MB). Free memory was 203.9 MB in the beginning and 266.0 MB in the end (delta: -62.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.89 ms. Allocated memory is still 310.4 MB. Free memory was 265.4 MB in the beginning and 263.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.52 ms. Allocated memory is still 310.4 MB. Free memory was 263.7 MB in the beginning and 262.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 488.22 ms. Allocated memory is still 310.4 MB. Free memory was 262.0 MB in the beginning and 236.7 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3808.24 ms. Allocated memory was 310.4 MB in the beginning and 426.2 MB in the end (delta: 115.9 MB). Free memory was 235.8 MB in the beginning and 309.6 MB in the end (delta: -73.7 MB). Peak memory consumption was 42.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1437 VarBasedMoverChecksPositive, 59 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 97 PlacesBefore, 41 PlacesAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 4737 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 263 SDtfs, 280 SDslu, 349 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...