/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/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:02:19,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:02:19,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:02:19,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:02:19,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:02:19,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:02:19,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:02:19,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:02:19,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:02:19,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:02:19,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:02:19,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:02:19,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:02:19,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:02:19,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:02:19,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:02:19,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:02:19,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:02:19,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:02:19,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:02:19,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:02:19,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:02:19,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:02:19,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:02:19,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:02:19,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:02:19,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:02:19,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:02:19,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:02:19,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:02:19,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:02:19,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:02:19,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:02:19,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:02:19,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:02:19,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:02:19,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:02:19,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:02:19,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:02:19,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:02:19,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:02:19,852 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 [2020-10-21 22:02:19,874 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:02:19,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:02:19,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:02:19,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:02:19,876 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:02:19,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:02:19,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:02:19,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:02:19,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:02:19,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:02:19,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:02:19,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:02:19,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:02:19,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:02:19,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:02:19,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:02:19,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:02:19,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:02:19,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:02:19,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:02:19,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:02:19,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:02:19,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:02:19,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:02:19,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:02:19,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:02:19,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:02:19,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:02:19,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:02:19,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:02:20,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:02:20,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:02:20,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:02:20,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:02:20,252 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:02:20,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-10-21 22:02:20,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6119ee2a3/6b4c4f82e34d4c0184c2c8eebc7919b2/FLAG8cb5dc797 [2020-10-21 22:02:20,875 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:02:20,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-10-21 22:02:20,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6119ee2a3/6b4c4f82e34d4c0184c2c8eebc7919b2/FLAG8cb5dc797 [2020-10-21 22:02:21,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6119ee2a3/6b4c4f82e34d4c0184c2c8eebc7919b2 [2020-10-21 22:02:21,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:02:21,199 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:02:21,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:21,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:02:21,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:02:21,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fba72e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21, skipping insertion in model container [2020-10-21 22:02:21,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:02:21,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:02:21,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:21,788 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:02:21,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:21,916 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:02:21,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21 WrapperNode [2020-10-21 22:02:21,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:21,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:21,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:02:21,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:02:21,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:21,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:02:21,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:02:21,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:02:21,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:21,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:22,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:22,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (1/1) ... [2020-10-21 22:02:22,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:02:22,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:02:22,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:02:22,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:02:22,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (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 [2020-10-21 22:02:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:02:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 22:02:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:02:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:02:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 22:02:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 22:02:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 22:02:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 22:02:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 22:02:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 22:02:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:02:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 22:02:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:02:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:02:22,083 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:02:22,506 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:02:22,507 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 22:02:22,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:22 BoogieIcfgContainer [2020-10-21 22:02:22,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:02:22,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:02:22,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:02:22,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:02:22,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:02:21" (1/3) ... [2020-10-21 22:02:22,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efeb121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:22, skipping insertion in model container [2020-10-21 22:02:22,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:21" (2/3) ... [2020-10-21 22:02:22,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efeb121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:22, skipping insertion in model container [2020-10-21 22:02:22,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:22" (3/3) ... [2020-10-21 22:02:22,520 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-10-21 22:02:22,533 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:02:22,534 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:02:22,542 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:02:22,543 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:02:22,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,581 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,584 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,590 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,600 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,600 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,600 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,600 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:22,603 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:02:22,616 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:02:22,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:02:22,637 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:02:22,637 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:02:22,637 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:02:22,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:02:22,637 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:02:22,638 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:02:22,638 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:02:22,651 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:02:22,653 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-21 22:02:22,655 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-21 22:02:22,657 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-21 22:02:22,708 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-21 22:02:22,708 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:02:22,714 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-21 22:02:22,717 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-21 22:02:24,168 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-21 22:02:24,435 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-21 22:02:24,748 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-21 22:02:24,749 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-21 22:02:24,756 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-21 22:02:24,782 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-21 22:02:24,784 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-21 22:02:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:02:24,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:24,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:24,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-21 22:02:24,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:24,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384746791] [2020-10-21 22:02:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:24,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384746791] [2020-10-21 22:02:24,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:24,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:02:24,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483436536] [2020-10-21 22:02:25,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-21 22:02:25,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:25,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-21 22:02:25,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-21 22:02:25,022 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-21 22:02:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:25,061 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-21 22:02:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-21 22:02:25,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-21 22:02:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:25,081 INFO L225 Difference]: With dead ends: 274 [2020-10-21 22:02:25,081 INFO L226 Difference]: Without dead ends: 226 [2020-10-21 22:02:25,083 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 [2020-10-21 22:02:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-21 22:02:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-21 22:02:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-21 22:02:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-21 22:02:25,168 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-21 22:02:25,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:25,169 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-21 22:02:25,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-21 22:02:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-21 22:02:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:02:25,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:25,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:25,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:02:25,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:25,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-21 22:02:25,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:25,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227056974] [2020-10-21 22:02:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:25,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227056974] [2020-10-21 22:02:25,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:25,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:02:25,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577540546] [2020-10-21 22:02:25,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:02:25,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:25,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:02:25,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:02:25,298 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-21 22:02:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:25,335 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-21 22:02:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:02:25,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 22:02:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:25,357 INFO L225 Difference]: With dead ends: 250 [2020-10-21 22:02:25,357 INFO L226 Difference]: Without dead ends: 202 [2020-10-21 22:02:25,358 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 [2020-10-21 22:02:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-21 22:02:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-21 22:02:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-21 22:02:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-21 22:02:25,377 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-21 22:02:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:25,377 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-21 22:02:25,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:02:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-21 22:02:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 22:02:25,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:25,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:25,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:02:25,380 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:25,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:25,380 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-21 22:02:25,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:25,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483427267] [2020-10-21 22:02:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:25,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483427267] [2020-10-21 22:02:25,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:25,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:25,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988695013] [2020-10-21 22:02:25,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:02:25,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:02:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:25,500 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-21 22:02:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:25,575 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-21 22:02:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:02:25,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-21 22:02:25,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:25,577 INFO L225 Difference]: With dead ends: 238 [2020-10-21 22:02:25,579 INFO L226 Difference]: Without dead ends: 106 [2020-10-21 22:02:25,580 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 [2020-10-21 22:02:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-21 22:02:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-21 22:02:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-21 22:02:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-21 22:02:25,589 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-21 22:02:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:25,590 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-21 22:02:25,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:02:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-21 22:02:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 22:02:25,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:25,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:25,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:02:25,592 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:25,592 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-21 22:02:25,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:25,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059933597] [2020-10-21 22:02:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:25,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059933597] [2020-10-21 22:02:25,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:25,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:25,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186953924] [2020-10-21 22:02:25,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:02:25,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:25,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:02:25,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:25,657 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-21 22:02:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:25,708 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-21 22:02:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:02:25,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-21 22:02:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:25,709 INFO L225 Difference]: With dead ends: 148 [2020-10-21 22:02:25,709 INFO L226 Difference]: Without dead ends: 76 [2020-10-21 22:02:25,710 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 [2020-10-21 22:02:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-21 22:02:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-21 22:02:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-21 22:02:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-21 22:02:25,715 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-21 22:02:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:25,716 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-21 22:02:25,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:02:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-21 22:02:25,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:02:25,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:25,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:25,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:02:25,718 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-21 22:02:25,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:25,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176173265] [2020-10-21 22:02:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:25,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176173265] [2020-10-21 22:02:25,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:25,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:02:25,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964538382] [2020-10-21 22:02:25,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:02:25,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:25,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:02:25,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:02:25,783 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-21 22:02:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:25,811 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-21 22:02:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:02:25,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-21 22:02:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:25,813 INFO L225 Difference]: With dead ends: 87 [2020-10-21 22:02:25,813 INFO L226 Difference]: Without dead ends: 66 [2020-10-21 22:02:25,814 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 [2020-10-21 22:02:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-21 22:02:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-21 22:02:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-21 22:02:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-21 22:02:25,819 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-21 22:02:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:25,819 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-21 22:02:25,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:02:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-21 22:02:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:02:25,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:25,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:25,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:02:25,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:25,821 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-21 22:02:25,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:25,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400492226] [2020-10-21 22:02:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:25,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400492226] [2020-10-21 22:02:25,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:25,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 22:02:25,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088046137] [2020-10-21 22:02:25,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:02:25,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:25,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:02:25,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:02:25,875 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-10-21 22:02:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:25,926 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-21 22:02:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:02:25,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-21 22:02:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:25,928 INFO L225 Difference]: With dead ends: 62 [2020-10-21 22:02:25,928 INFO L226 Difference]: Without dead ends: 47 [2020-10-21 22:02:25,928 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 [2020-10-21 22:02:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-21 22:02:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-21 22:02:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-21 22:02:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-21 22:02:25,931 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-21 22:02:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:25,932 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-21 22:02:25,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:02:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-21 22:02:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:02:25,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:25,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:25,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:02:25,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:25,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:25,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-21 22:02:25,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:25,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660085015] [2020-10-21 22:02:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:25,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660085015] [2020-10-21 22:02:25,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:25,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:02:25,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835112380] [2020-10-21 22:02:25,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 22:02:25,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:25,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 22:02:25,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:02:25,984 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-21 22:02:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:26,033 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-21 22:02:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 22:02:26,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-21 22:02:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:26,034 INFO L225 Difference]: With dead ends: 40 [2020-10-21 22:02:26,034 INFO L226 Difference]: Without dead ends: 34 [2020-10-21 22:02:26,035 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 [2020-10-21 22:02:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-21 22:02:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-21 22:02:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-21 22:02:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-21 22:02:26,037 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-21 22:02:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:26,037 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-21 22:02:26,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 22:02:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-21 22:02:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:02:26,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:26,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:26,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 22:02:26,039 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:26,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-21 22:02:26,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:26,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106355622] [2020-10-21 22:02:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:26,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106355622] [2020-10-21 22:02:26,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:26,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 22:02:26,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104288572] [2020-10-21 22:02:26,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:02:26,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:26,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:02:26,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:02:26,164 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 10 states. [2020-10-21 22:02:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:26,373 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2020-10-21 22:02:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:02:26,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-21 22:02:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:26,374 INFO L225 Difference]: With dead ends: 46 [2020-10-21 22:02:26,374 INFO L226 Difference]: Without dead ends: 28 [2020-10-21 22:02:26,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:02:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-21 22:02:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-21 22:02:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-21 22:02:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-10-21 22:02:26,377 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2020-10-21 22:02:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:26,377 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-10-21 22:02:26,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:02:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-10-21 22:02:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:02:26,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:02:26,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:02:26,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 22:02:26,379 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:02:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:02:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1493599964, now seen corresponding path program 2 times [2020-10-21 22:02:26,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:02:26,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317809731] [2020-10-21 22:02:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:02:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:02:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:02:26,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317809731] [2020-10-21 22:02:26,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:02:26,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-21 22:02:26,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552903316] [2020-10-21 22:02:26,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:02:26,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:02:26,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:02:26,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:02:26,521 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 10 states. [2020-10-21 22:02:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:02:26,602 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-10-21 22:02:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 22:02:26,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-21 22:02:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:02:26,603 INFO L225 Difference]: With dead ends: 27 [2020-10-21 22:02:26,603 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:02:26,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:02:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:02:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:02:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:02:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:02:26,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-21 22:02:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:02:26,605 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:02:26,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:02:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:02:26,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:02:26,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-21 22:02:26,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:02:26 BasicIcfg [2020-10-21 22:02:26,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:02:26,611 INFO L168 Benchmark]: Toolchain (without parser) took 5418.29 ms. Allocated memory was 136.8 MB in the beginning and 301.5 MB in the end (delta: 164.6 MB). Free memory was 97.5 MB in the beginning and 248.7 MB in the end (delta: -151.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:26,612 INFO L168 Benchmark]: CDTParser took 3.37 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 22:02:26,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.86 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 96.7 MB in the beginning and 156.1 MB in the end (delta: -59.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:26,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.50 ms. Allocated memory is still 200.3 MB. Free memory was 156.1 MB in the beginning and 153.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:26,615 INFO L168 Benchmark]: Boogie Preprocessor took 27.82 ms. Allocated memory is still 200.3 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:26,616 INFO L168 Benchmark]: RCFGBuilder took 502.44 ms. Allocated memory is still 200.3 MB. Free memory was 152.5 MB in the beginning and 128.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-21 22:02:26,616 INFO L168 Benchmark]: TraceAbstraction took 4098.18 ms. Allocated memory was 200.3 MB in the beginning and 301.5 MB in the end (delta: 101.2 MB). Free memory was 128.0 MB in the beginning and 248.7 MB in the end (delta: -120.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-21 22:02:26,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.37 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.86 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 96.7 MB in the beginning and 156.1 MB in the end (delta: -59.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.50 ms. Allocated memory is still 200.3 MB. Free memory was 156.1 MB in the beginning and 153.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.82 ms. Allocated memory is still 200.3 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.44 ms. Allocated memory is still 200.3 MB. Free memory was 152.5 MB in the beginning and 128.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4098.18 ms. Allocated memory was 200.3 MB in the beginning and 301.5 MB in the end (delta: 101.2 MB). Free memory was 128.0 MB in the beginning and 248.7 MB in the end (delta: -120.7 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 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 164 SDtfs, 184 SDslu, 379 SDs, 0 SdLazy, 325 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 5856 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...