/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:50:40,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:50:40,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:50:40,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:50:40,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:50:40,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:50:40,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:50:40,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:50:40,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:50:40,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:50:40,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:50:40,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:50:40,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:50:40,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:50:40,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:50:40,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:50:40,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:50:40,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:50:40,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:50:40,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:50:40,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:50:40,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:50:40,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:50:40,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:50:40,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:50:40,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:50:40,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:50:40,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:50:40,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:50:40,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:50:40,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:50:40,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:50:40,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:50:40,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:50:40,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:50:40,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:50:40,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:50:40,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:50:40,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:50:40,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:50:40,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:50:40,828 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 [2020-10-05 22:50:40,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:50:40,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:50:40,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:50:40,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:50:40,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:50:40,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:50:40,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:50:40,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:50:40,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:50:40,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:50:40,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:50:40,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:50:40,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:50:40,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:50:40,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:50:40,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:50:40,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:50:40,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:50:40,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:50:40,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:50:40,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:50:40,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:50:40,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:50:40,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:50:40,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:50:40,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:50:40,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:50:40,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:50:40,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:50:40,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:50:41,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:50:41,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:50:41,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:50:41,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:50:41,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:50:41,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-10-05 22:50:41,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9c91b2d/fb9ec004ccc04095a878cc056747d8a3/FLAG853aaccec [2020-10-05 22:50:41,765 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:50:41,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-10-05 22:50:41,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9c91b2d/fb9ec004ccc04095a878cc056747d8a3/FLAG853aaccec [2020-10-05 22:50:42,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d9c91b2d/fb9ec004ccc04095a878cc056747d8a3 [2020-10-05 22:50:42,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:50:42,079 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:50:42,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:50:42,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:50:42,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:50:42,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d329bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42, skipping insertion in model container [2020-10-05 22:50:42,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:50:42,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:50:42,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:50:42,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:50:42,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:50:42,740 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:50:42,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42 WrapperNode [2020-10-05 22:50:42,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:50:42,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:50:42,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:50:42,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:50:42,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:50:42,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:50:42,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:50:42,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:50:42,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (1/1) ... [2020-10-05 22:50:42,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:50:42,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:50:42,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:50:42,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:50:42,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (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 [2020-10-05 22:50:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:50:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:50:42,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:50:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:50:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:50:42,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:50:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:50:42,884 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:50:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:50:42,885 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:50:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:50:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:50:42,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:50:42,887 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:50:43,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:50:43,206 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:50:43,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:50:43 BoogieIcfgContainer [2020-10-05 22:50:43,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:50:43,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:50:43,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:50:43,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:50:43,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:50:42" (1/3) ... [2020-10-05 22:50:43,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c328f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:50:43, skipping insertion in model container [2020-10-05 22:50:43,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:42" (2/3) ... [2020-10-05 22:50:43,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c328f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:50:43, skipping insertion in model container [2020-10-05 22:50:43,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:50:43" (3/3) ... [2020-10-05 22:50:43,218 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-10-05 22:50:43,229 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:50:43,229 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:50:43,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:50:43,237 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:50:43,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,287 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,287 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,288 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,291 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,291 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,291 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,292 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,297 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,297 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,303 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,307 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,307 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,307 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:43,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:50:43,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:50:43,344 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:50:43,344 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:50:43,344 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:50:43,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:50:43,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:50:43,345 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:50:43,345 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:50:43,361 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-05 22:50:43,363 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-05 22:50:43,421 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-05 22:50:43,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:50:43,427 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-05 22:50:43,430 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-05 22:50:43,451 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-05 22:50:43,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:50:43,452 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-05 22:50:43,454 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-10-05 22:50:43,455 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:50:44,819 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-05 22:50:44,915 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-10-05 22:50:44,915 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-10-05 22:50:44,918 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:50:44,943 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-05 22:50:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-05 22:50:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:50:44,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:44,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:44,954 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:44,960 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-10-05 22:50:44,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:44,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976712899] [2020-10-05 22:50:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:45,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976712899] [2020-10-05 22:50:45,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:45,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:45,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28752300] [2020-10-05 22:50:45,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-05 22:50:45,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:45,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-05 22:50:45,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-05 22:50:45,152 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-05 22:50:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:45,180 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-05 22:50:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-05 22:50:45,182 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-05 22:50:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:45,197 INFO L225 Difference]: With dead ends: 274 [2020-10-05 22:50:45,197 INFO L226 Difference]: Without dead ends: 226 [2020-10-05 22:50:45,199 INFO L675 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 [2020-10-05 22:50:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-05 22:50:45,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-05 22:50:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-05 22:50:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-05 22:50:45,270 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-05 22:50:45,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:45,271 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-05 22:50:45,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-05 22:50:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-05 22:50:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:50:45,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:45,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:45,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:50:45,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-10-05 22:50:45,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:45,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795451543] [2020-10-05 22:50:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:45,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795451543] [2020-10-05 22:50:45,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:45,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:45,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663675065] [2020-10-05 22:50:45,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:50:45,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:45,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:50:45,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:45,402 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 5 states. [2020-10-05 22:50:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:45,468 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-05 22:50:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:50:45,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-05 22:50:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:45,472 INFO L225 Difference]: With dead ends: 250 [2020-10-05 22:50:45,472 INFO L226 Difference]: Without dead ends: 202 [2020-10-05 22:50:45,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:50:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-05 22:50:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-05 22:50:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-05 22:50:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-05 22:50:45,491 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-05 22:50:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:45,491 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-05 22:50:45,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:50:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-05 22:50:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:50:45,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:45,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:45,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:50:45,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:45,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-10-05 22:50:45,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:45,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230393318] [2020-10-05 22:50:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:45,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230393318] [2020-10-05 22:50:45,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:45,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:50:45,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420469770] [2020-10-05 22:50:45,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:50:45,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:50:45,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:50:45,627 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 6 states. [2020-10-05 22:50:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:45,729 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2020-10-05 22:50:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:50:45,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:50:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:45,731 INFO L225 Difference]: With dead ends: 262 [2020-10-05 22:50:45,731 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 22:50:45,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:50:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 22:50:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-05 22:50:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 22:50:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2020-10-05 22:50:45,742 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2020-10-05 22:50:45,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:45,742 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2020-10-05 22:50:45,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:50:45,742 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2020-10-05 22:50:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:50:45,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:45,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:45,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:50:45,744 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:45,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1312152701, now seen corresponding path program 1 times [2020-10-05 22:50:45,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:45,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399363274] [2020-10-05 22:50:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:45,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399363274] [2020-10-05 22:50:45,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:45,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:45,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605296298] [2020-10-05 22:50:45,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:45,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:45,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:45,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:45,830 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 4 states. [2020-10-05 22:50:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:45,854 INFO L93 Difference]: Finished difference Result 174 states and 426 transitions. [2020-10-05 22:50:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:45,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:50:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:45,858 INFO L225 Difference]: With dead ends: 174 [2020-10-05 22:50:45,858 INFO L226 Difference]: Without dead ends: 150 [2020-10-05 22:50:45,858 INFO L675 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 [2020-10-05 22:50:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-05 22:50:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-05 22:50:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-05 22:50:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-10-05 22:50:45,876 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-10-05 22:50:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:45,877 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-10-05 22:50:45,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-10-05 22:50:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:50:45,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:45,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:45,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:50:45,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-10-05 22:50:45,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:45,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432550198] [2020-10-05 22:50:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:45,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432550198] [2020-10-05 22:50:45,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:45,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:45,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792878939] [2020-10-05 22:50:45,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:45,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:45,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:45,992 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 4 states. [2020-10-05 22:50:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:46,026 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-10-05 22:50:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:46,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-05 22:50:46,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:46,032 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:50:46,032 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 22:50:46,032 INFO L675 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 [2020-10-05 22:50:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 22:50:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-05 22:50:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-05 22:50:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-10-05 22:50:46,042 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-10-05 22:50:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:46,043 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-10-05 22:50:46,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-10-05 22:50:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:50:46,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:46,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:46,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:50:46,051 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:46,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-10-05 22:50:46,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:46,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865580844] [2020-10-05 22:50:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:46,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865580844] [2020-10-05 22:50:46,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:46,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:50:46,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742379830] [2020-10-05 22:50:46,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:50:46,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:46,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:50:46,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:46,148 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 5 states. [2020-10-05 22:50:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:46,220 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-10-05 22:50:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:50:46,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-05 22:50:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:46,222 INFO L225 Difference]: With dead ends: 116 [2020-10-05 22:50:46,222 INFO L226 Difference]: Without dead ends: 92 [2020-10-05 22:50:46,223 INFO L675 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 [2020-10-05 22:50:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-05 22:50:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-05 22:50:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-05 22:50:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-10-05 22:50:46,228 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-10-05 22:50:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:46,228 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-10-05 22:50:46,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:50:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-10-05 22:50:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:50:46,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:46,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:46,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:50:46,234 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:46,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:46,234 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-10-05 22:50:46,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:46,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494761693] [2020-10-05 22:50:46,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:46,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494761693] [2020-10-05 22:50:46,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:46,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:46,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629165400] [2020-10-05 22:50:46,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:46,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:46,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:46,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:46,307 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 4 states. [2020-10-05 22:50:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:46,326 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-10-05 22:50:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:46,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-05 22:50:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:46,328 INFO L225 Difference]: With dead ends: 120 [2020-10-05 22:50:46,328 INFO L226 Difference]: Without dead ends: 94 [2020-10-05 22:50:46,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-05 22:50:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-10-05 22:50:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-05 22:50:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-10-05 22:50:46,332 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-10-05 22:50:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:46,333 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-10-05 22:50:46,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-10-05 22:50:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:50:46,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:46,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:46,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:50:46,334 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:46,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:46,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-10-05 22:50:46,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:46,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104731048] [2020-10-05 22:50:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:46,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104731048] [2020-10-05 22:50:46,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:46,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:50:46,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415736611] [2020-10-05 22:50:46,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:50:46,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:46,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:50:46,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:46,430 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 5 states. [2020-10-05 22:50:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:46,457 INFO L93 Difference]: Finished difference Result 113 states and 209 transitions. [2020-10-05 22:50:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:46,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-05 22:50:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:46,459 INFO L225 Difference]: With dead ends: 113 [2020-10-05 22:50:46,459 INFO L226 Difference]: Without dead ends: 70 [2020-10-05 22:50:46,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:50:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-05 22:50:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-05 22:50:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-05 22:50:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-10-05 22:50:46,462 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 15 [2020-10-05 22:50:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:46,462 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-10-05 22:50:46,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:50:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-10-05 22:50:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:50:46,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:46,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:46,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:50:46,464 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:46,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1504039886, now seen corresponding path program 1 times [2020-10-05 22:50:46,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:46,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159325261] [2020-10-05 22:50:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:46,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159325261] [2020-10-05 22:50:46,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:46,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-05 22:50:46,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285101108] [2020-10-05 22:50:46,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:50:46,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:46,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:50:46,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:50:46,514 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-10-05 22:50:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:46,539 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-05 22:50:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:50:46,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 22:50:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:46,540 INFO L225 Difference]: With dead ends: 58 [2020-10-05 22:50:46,540 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:50:46,540 INFO L675 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 [2020-10-05 22:50:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:50:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:50:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:50:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:50:46,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-05 22:50:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:46,541 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:50:46,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:50:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:50:46,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:50:46,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:50:46,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:50:46 BasicIcfg [2020-10-05 22:50:46,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:50:46,547 INFO L168 Benchmark]: Toolchain (without parser) took 4468.30 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 100.4 MB in the beginning and 168.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:46,548 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-05 22:50:46,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.94 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 159.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:46,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 201.9 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:46,550 INFO L168 Benchmark]: Boogie Preprocessor took 25.76 ms. Allocated memory is still 201.9 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:46,551 INFO L168 Benchmark]: RCFGBuilder took 391.73 ms. Allocated memory is still 201.9 MB. Free memory was 155.6 MB in the beginning and 133.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:46,552 INFO L168 Benchmark]: TraceAbstraction took 3334.59 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.7 MB in the beginning and 168.4 MB in the end (delta: -35.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:46,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.94 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 159.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.72 ms. Allocated memory is still 201.9 MB. Free memory was 159.5 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.76 ms. Allocated memory is still 201.9 MB. Free memory was 157.6 MB in the beginning and 155.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.73 ms. Allocated memory is still 201.9 MB. Free memory was 155.6 MB in the beginning and 133.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3334.59 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 132.7 MB in the beginning and 168.4 MB in the end (delta: -35.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 609 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 178 SDtfs, 200 SDslu, 303 SDs, 0 SdLazy, 161 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3626 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...