/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/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 22:28:48,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 22:28:48,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 22:28:48,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 22:28:48,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 22:28:48,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 22:28:48,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 22:28:48,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 22:28:48,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 22:28:48,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 22:28:48,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 22:28:48,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 22:28:48,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 22:28:48,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 22:28:48,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 22:28:48,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 22:28:48,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 22:28:48,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 22:28:48,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 22:28:48,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 22:28:48,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 22:28:48,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 22:28:48,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 22:28:48,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 22:28:48,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 22:28:48,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 22:28:48,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 22:28:48,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 22:28:48,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 22:28:48,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 22:28:48,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 22:28:48,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 22:28:48,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 22:28:48,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 22:28:48,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 22:28:48,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 22:28:48,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 22:28:48,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 22:28:48,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 22:28:48,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 22:28:48,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 22:28:48,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 22:28:48,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 22:28:48,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 22:28:48,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 22:28:48,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 22:28:48,849 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 22:28:48,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 22:28:48,850 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 22:28:48,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 22:28:48,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 22:28:48,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 22:28:48,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 22:28:48,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 22:28:48,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 22:28:48,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 22:28:48,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 22:28:48,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 22:28:48,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 22:28:48,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 22:28:48,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 22:28:48,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 22:28:48,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 22:28:48,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:28:48,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 22:28:48,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 22:28:48,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 22:28:48,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 22:28:48,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 22:28:48,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 22:28:48,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 22:28:48,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 22:28:49,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 22:28:49,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 22:28:49,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 22:28:49,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 22:28:49,309 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 22:28:49,310 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-14 22:28:49,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/199f993ba/8205651c421a4b9ca043bcf352ad2c87/FLAGd8f385fa7 [2020-09-14 22:28:49,953 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 22:28:49,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-14 22:28:49,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/199f993ba/8205651c421a4b9ca043bcf352ad2c87/FLAGd8f385fa7 [2020-09-14 22:28:50,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/199f993ba/8205651c421a4b9ca043bcf352ad2c87 [2020-09-14 22:28:50,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 22:28:50,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 22:28:50,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 22:28:50,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 22:28:50,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 22:28:50,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:28:50" (1/1) ... [2020-09-14 22:28:50,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:50, skipping insertion in model container [2020-09-14 22:28:50,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 10:28:50" (1/1) ... [2020-09-14 22:28:50,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 22:28:50,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 22:28:50,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:28:50,908 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 22:28:50,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 22:28:51,068 INFO L208 MainTranslator]: Completed translation [2020-09-14 22:28:51,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51 WrapperNode [2020-09-14 22:28:51,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 22:28:51,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 22:28:51,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 22:28:51,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 22:28:51,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 22:28:51,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 22:28:51,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 22:28:51,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 22:28:51,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... [2020-09-14 22:28:51,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 22:28:51,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 22:28:51,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 22:28:51,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 22:28:51,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 22:28:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 22:28:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 22:28:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 22:28:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 22:28:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 22:28:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 22:28:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 22:28:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 22:28:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 22:28:51,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 22:28:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 22:28:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 22:28:51,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 22:28:51,293 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 22:28:51,691 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 22:28:51,692 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 22:28:51,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:28:51 BoogieIcfgContainer [2020-09-14 22:28:51,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 22:28:51,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 22:28:51,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 22:28:51,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 22:28:51,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 10:28:50" (1/3) ... [2020-09-14 22:28:51,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3463b778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:28:51, skipping insertion in model container [2020-09-14 22:28:51,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 10:28:51" (2/3) ... [2020-09-14 22:28:51,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3463b778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 10:28:51, skipping insertion in model container [2020-09-14 22:28:51,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 10:28:51" (3/3) ... [2020-09-14 22:28:51,708 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-09-14 22:28:51,720 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 22:28:51,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 22:28:51,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 22:28:51,732 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 22:28:51,762 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,762 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,763 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,764 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,765 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,765 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,766 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,767 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,767 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,768 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,773 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,775 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,790 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,795 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,796 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 22:28:51,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 22:28:51,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 22:28:51,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 22:28:51,852 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 22:28:51,853 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 22:28:51,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 22:28:51,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 22:28:51,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 22:28:51,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 22:28:51,876 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-14 22:28:51,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 22:28:51,932 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 22:28:51,932 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:28:51,941 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 22:28:51,947 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 22:28:51,987 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 22:28:51,987 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 22:28:51,988 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 22:28:51,990 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 22:28:51,991 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 22:28:53,767 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2287 [2020-09-14 22:28:53,767 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-14 22:28:53,772 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-14 22:28:53,800 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-14 22:28:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-14 22:28:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 22:28:53,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:53,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:53,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:53,823 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-09-14 22:28:53,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:53,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616342266] [2020-09-14 22:28:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:54,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616342266] [2020-09-14 22:28:54,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:54,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:28:54,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961766474] [2020-09-14 22:28:54,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:28:54,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:54,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:28:54,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,141 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-14 22:28:54,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:54,202 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-14 22:28:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:28:54,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 22:28:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:54,225 INFO L225 Difference]: With dead ends: 290 [2020-09-14 22:28:54,225 INFO L226 Difference]: Without dead ends: 226 [2020-09-14 22:28:54,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-14 22:28:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-14 22:28:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-14 22:28:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-14 22:28:54,312 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-14 22:28:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:54,314 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-14 22:28:54,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:28:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-14 22:28:54,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 22:28:54,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:54,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:54,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 22:28:54,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash 572259518, now seen corresponding path program 1 times [2020-09-14 22:28:54,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:54,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486416505] [2020-09-14 22:28:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:54,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486416505] [2020-09-14 22:28:54,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:54,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:28:54,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112989594] [2020-09-14 22:28:54,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:28:54,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:54,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:28:54,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,416 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-14 22:28:54,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:54,428 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-09-14 22:28:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:28:54,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-14 22:28:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:54,432 INFO L225 Difference]: With dead ends: 220 [2020-09-14 22:28:54,432 INFO L226 Difference]: Without dead ends: 220 [2020-09-14 22:28:54,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-14 22:28:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-14 22:28:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-14 22:28:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-09-14 22:28:54,454 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-09-14 22:28:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:54,454 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-09-14 22:28:54,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:28:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-09-14 22:28:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:28:54,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:54,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:54,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 22:28:54,457 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1053246614, now seen corresponding path program 1 times [2020-09-14 22:28:54,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:54,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137149891] [2020-09-14 22:28:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:54,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137149891] [2020-09-14 22:28:54,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:54,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:28:54,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905532207] [2020-09-14 22:28:54,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:28:54,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:54,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:28:54,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,554 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 3 states. [2020-09-14 22:28:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:54,586 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-09-14 22:28:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:28:54,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 22:28:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:54,589 INFO L225 Difference]: With dead ends: 296 [2020-09-14 22:28:54,591 INFO L226 Difference]: Without dead ends: 236 [2020-09-14 22:28:54,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-14 22:28:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-09-14 22:28:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-14 22:28:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-09-14 22:28:54,624 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-09-14 22:28:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:54,624 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-09-14 22:28:54,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:28:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-09-14 22:28:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 22:28:54,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:54,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:54,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 22:28:54,633 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:54,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:54,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1826039448, now seen corresponding path program 1 times [2020-09-14 22:28:54,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:54,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822289536] [2020-09-14 22:28:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:54,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822289536] [2020-09-14 22:28:54,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:54,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 22:28:54,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607841187] [2020-09-14 22:28:54,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:28:54,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:28:54,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,741 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand 3 states. [2020-09-14 22:28:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:54,758 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-09-14 22:28:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:28:54,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 22:28:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:54,760 INFO L225 Difference]: With dead ends: 203 [2020-09-14 22:28:54,760 INFO L226 Difference]: Without dead ends: 203 [2020-09-14 22:28:54,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-14 22:28:54,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-09-14 22:28:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-14 22:28:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-09-14 22:28:54,772 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-09-14 22:28:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:54,773 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-09-14 22:28:54,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:28:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-09-14 22:28:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 22:28:54,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:54,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:54,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 22:28:54,775 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:54,775 INFO L82 PathProgramCache]: Analyzing trace with hash -772648785, now seen corresponding path program 1 times [2020-09-14 22:28:54,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:54,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838471215] [2020-09-14 22:28:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:54,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838471215] [2020-09-14 22:28:54,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:54,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:28:54,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402438069] [2020-09-14 22:28:54,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:28:54,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:54,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:28:54,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:28:54,832 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand 4 states. [2020-09-14 22:28:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:54,856 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-09-14 22:28:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 22:28:54,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 22:28:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:54,858 INFO L225 Difference]: With dead ends: 240 [2020-09-14 22:28:54,859 INFO L226 Difference]: Without dead ends: 144 [2020-09-14 22:28:54,859 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 [2020-09-14 22:28:54,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-14 22:28:54,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-14 22:28:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-14 22:28:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-09-14 22:28:54,881 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-09-14 22:28:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:54,882 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-09-14 22:28:54,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:28:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-09-14 22:28:54,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 22:28:54,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:54,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:54,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 22:28:54,884 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-09-14 22:28:54,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:54,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124698737] [2020-09-14 22:28:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:54,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124698737] [2020-09-14 22:28:54,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:54,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:28:54,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829389718] [2020-09-14 22:28:54,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 22:28:54,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 22:28:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 22:28:54,969 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand 4 states. [2020-09-14 22:28:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:55,023 INFO L93 Difference]: Finished difference Result 164 states and 345 transitions. [2020-09-14 22:28:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 22:28:55,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 22:28:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:55,025 INFO L225 Difference]: With dead ends: 164 [2020-09-14 22:28:55,025 INFO L226 Difference]: Without dead ends: 124 [2020-09-14 22:28:55,026 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 [2020-09-14 22:28:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-14 22:28:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-09-14 22:28:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-14 22:28:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-09-14 22:28:55,031 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 12 [2020-09-14 22:28:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:55,031 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-09-14 22:28:55,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 22:28:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-09-14 22:28:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 22:28:55,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:55,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:55,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 22:28:55,033 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:55,034 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 1 times [2020-09-14 22:28:55,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:55,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105610039] [2020-09-14 22:28:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:55,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105610039] [2020-09-14 22:28:55,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:55,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 22:28:55,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066492960] [2020-09-14 22:28:55,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 22:28:55,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:55,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 22:28:55,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 22:28:55,116 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-09-14 22:28:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:55,182 INFO L93 Difference]: Finished difference Result 122 states and 237 transitions. [2020-09-14 22:28:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:28:55,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-14 22:28:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:55,184 INFO L225 Difference]: With dead ends: 122 [2020-09-14 22:28:55,184 INFO L226 Difference]: Without dead ends: 97 [2020-09-14 22:28:55,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:28:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-14 22:28:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-14 22:28:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-14 22:28:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-09-14 22:28:55,189 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 13 [2020-09-14 22:28:55,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:55,189 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-09-14 22:28:55,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 22:28:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-09-14 22:28:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 22:28:55,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:55,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:55,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 22:28:55,191 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:55,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-09-14 22:28:55,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:55,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149631493] [2020-09-14 22:28:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:55,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149631493] [2020-09-14 22:28:55,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:55,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 22:28:55,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4884848] [2020-09-14 22:28:55,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 22:28:55,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:55,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 22:28:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:55,237 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 3 states. [2020-09-14 22:28:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:55,245 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-09-14 22:28:55,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 22:28:55,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-14 22:28:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:55,246 INFO L225 Difference]: With dead ends: 101 [2020-09-14 22:28:55,247 INFO L226 Difference]: Without dead ends: 73 [2020-09-14 22:28:55,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 22:28:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-14 22:28:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-09-14 22:28:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-14 22:28:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-09-14 22:28:55,250 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-09-14 22:28:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:55,251 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-09-14 22:28:55,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 22:28:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-09-14 22:28:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 22:28:55,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 22:28:55,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 22:28:55,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 22:28:55,253 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 22:28:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 22:28:55,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-09-14 22:28:55,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 22:28:55,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631044725] [2020-09-14 22:28:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 22:28:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 22:28:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 22:28:55,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631044725] [2020-09-14 22:28:55,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 22:28:55,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 22:28:55,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459527512] [2020-09-14 22:28:55,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 22:28:55,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 22:28:55,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 22:28:55,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 22:28:55,364 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 6 states. [2020-09-14 22:28:55,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 22:28:55,405 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-09-14 22:28:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 22:28:55,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 22:28:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 22:28:55,406 INFO L225 Difference]: With dead ends: 67 [2020-09-14 22:28:55,406 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 22:28:55,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-14 22:28:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 22:28:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 22:28:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 22:28:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 22:28:55,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-14 22:28:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 22:28:55,407 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 22:28:55,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 22:28:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 22:28:55,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 22:28:55,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 22:28:55,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 10:28:55 BasicIcfg [2020-09-14 22:28:55,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 22:28:55,418 INFO L168 Benchmark]: Toolchain (without parser) took 5170.04 ms. Allocated memory was 138.9 MB in the beginning and 250.1 MB in the end (delta: 111.1 MB). Free memory was 100.5 MB in the beginning and 162.3 MB in the end (delta: -61.8 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:28:55,419 INFO L168 Benchmark]: CDTParser took 1.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 22:28:55,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 819.18 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 160.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-14 22:28:55,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.62 ms. Allocated memory is still 202.4 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-14 22:28:55,426 INFO L168 Benchmark]: Boogie Preprocessor took 47.31 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 22:28:55,428 INFO L168 Benchmark]: RCFGBuilder took 486.58 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 134.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-14 22:28:55,429 INFO L168 Benchmark]: TraceAbstraction took 3714.50 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 133.6 MB in the beginning and 162.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-09-14 22:28:55,442 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.49 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 819.18 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 160.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 92.62 ms. Allocated memory is still 202.4 MB. Free memory was 160.0 MB in the beginning and 157.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.31 ms. Allocated memory is still 202.4 MB. Free memory was 157.9 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.58 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 134.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3714.50 ms. Allocated memory was 202.4 MB in the beginning and 250.1 MB in the end (delta: 47.7 MB). Free memory was 133.6 MB in the beginning and 162.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2287 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 167 SDtfs, 120 SDslu, 173 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 2893 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...