/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 00:18:45,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 00:18:45,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 00:18:45,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 00:18:45,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 00:18:45,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 00:18:45,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 00:18:45,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 00:18:45,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 00:18:45,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 00:18:45,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 00:18:45,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 00:18:45,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 00:18:45,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 00:18:45,934 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 00:18:45,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 00:18:45,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 00:18:45,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 00:18:45,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 00:18:45,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 00:18:45,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 00:18:45,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 00:18:45,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 00:18:45,935 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 00:18:45,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 00:18:45,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 00:18:45,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 00:18:45,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 00:18:45,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 00:18:45,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 00:18:45,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 00:18:45,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 00:18:45,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 00:18:45,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 00:18:45,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 00:18:45,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 00:18:45,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 00:18:45,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 00:18:45,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 00:18:45,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 00:18:46,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 00:18:46,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 00:18:46,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 00:18:46,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 00:18:46,227 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 00:18:46,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-06-05 00:18:46,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f79de0fa/ed1f504d73ad49899ed26c0ed840ffcc/FLAG88b43688f [2021-06-05 00:18:46,717 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 00:18:46,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-06-05 00:18:46,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f79de0fa/ed1f504d73ad49899ed26c0ed840ffcc/FLAG88b43688f [2021-06-05 00:18:46,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f79de0fa/ed1f504d73ad49899ed26c0ed840ffcc [2021-06-05 00:18:46,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 00:18:46,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 00:18:46,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 00:18:46,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 00:18:46,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 00:18:46,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:18:46" (1/1) ... [2021-06-05 00:18:46,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf535db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:46, skipping insertion in model container [2021-06-05 00:18:46,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:18:46" (1/1) ... [2021-06-05 00:18:46,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 00:18:46,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 00:18:46,968 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-06-05 00:18:47,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:18:47,104 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 00:18:47,112 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i[950,963] [2021-06-05 00:18:47,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:18:47,190 INFO L208 MainTranslator]: Completed translation [2021-06-05 00:18:47,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47 WrapperNode [2021-06-05 00:18:47,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 00:18:47,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 00:18:47,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 00:18:47,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 00:18:47,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 00:18:47,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 00:18:47,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 00:18:47,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 00:18:47,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (1/1) ... [2021-06-05 00:18:47,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 00:18:47,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 00:18:47,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 00:18:47,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 00:18:47,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (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 [2021-06-05 00:18:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 00:18:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 00:18:47,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 00:18:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 00:18:47,302 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 00:18:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 00:18:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 00:18:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 00:18:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 00:18:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 00:18:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 00:18:47,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 00:18:47,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 00:18:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 00:18:47,304 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 00:18:47,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 00:18:47,632 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 00:18:47,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:18:47 BoogieIcfgContainer [2021-06-05 00:18:47,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 00:18:47,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 00:18:47,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 00:18:47,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 00:18:47,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:18:46" (1/3) ... [2021-06-05 00:18:47,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0dc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:18:47, skipping insertion in model container [2021-06-05 00:18:47,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:18:47" (2/3) ... [2021-06-05 00:18:47,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0dc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:18:47, skipping insertion in model container [2021-06-05 00:18:47,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:18:47" (3/3) ... [2021-06-05 00:18:47,641 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2021-06-05 00:18:47,647 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 00:18:47,647 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 00:18:47,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 00:18:47,648 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 00:18:47,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,672 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,682 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,682 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,682 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,686 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,686 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,690 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:18:47,695 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 00:18:47,711 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 00:18:47,731 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 00:18:47,731 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 00:18:47,731 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 00:18:47,731 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 00:18:47,731 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 00:18:47,731 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 00:18:47,731 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 00:18:47,731 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 00:18:47,743 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-05 00:18:48,217 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 00:18:48,297 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:48,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:18:48,298 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1166335616, now seen corresponding path program 1 times [2021-06-05 00:18:48,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:48,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867146682] [2021-06-05 00:18:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:18:48,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:48,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867146682] [2021-06-05 00:18:48,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867146682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:48,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:48,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:18:48,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439682618] [2021-06-05 00:18:48,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:18:48,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:48,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:18:48,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:18:48,689 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:48,968 INFO L93 Difference]: Finished difference Result 13119 states and 45583 transitions. [2021-06-05 00:18:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:18:48,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 00:18:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:49,012 INFO L225 Difference]: With dead ends: 13119 [2021-06-05 00:18:49,012 INFO L226 Difference]: Without dead ends: 4964 [2021-06-05 00:18:49,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2021-06-05 00:18:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 4964. [2021-06-05 00:18:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4964 states, 4963 states have (on average 3.4009671569615154) internal successors, (16879), 4963 states have internal predecessors, (16879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 16879 transitions. [2021-06-05 00:18:49,291 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 16879 transitions. Word has length 49 [2021-06-05 00:18:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:49,294 INFO L482 AbstractCegarLoop]: Abstraction has 4964 states and 16879 transitions. [2021-06-05 00:18:49,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 16879 transitions. [2021-06-05 00:18:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 00:18:49,307 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:49,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:18:49,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 00:18:49,308 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:49,310 INFO L82 PathProgramCache]: Analyzing trace with hash -822109473, now seen corresponding path program 1 times [2021-06-05 00:18:49,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:49,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672123153] [2021-06-05 00:18:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:18:49,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:49,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672123153] [2021-06-05 00:18:49,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672123153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:49,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:49,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:18:49,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101891119] [2021-06-05 00:18:49,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:18:49,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:18:49,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:18:49,536 INFO L87 Difference]: Start difference. First operand 4964 states and 16879 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:49,715 INFO L93 Difference]: Finished difference Result 5776 states and 19260 transitions. [2021-06-05 00:18:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:18:49,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-05 00:18:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:49,737 INFO L225 Difference]: With dead ends: 5776 [2021-06-05 00:18:49,737 INFO L226 Difference]: Without dead ends: 4404 [2021-06-05 00:18:49,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4404 states. [2021-06-05 00:18:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4404 to 4404. [2021-06-05 00:18:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4404 states, 4403 states have (on average 3.324778560072678) internal successors, (14639), 4403 states have internal predecessors, (14639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 14639 transitions. [2021-06-05 00:18:49,885 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 14639 transitions. Word has length 51 [2021-06-05 00:18:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:49,886 INFO L482 AbstractCegarLoop]: Abstraction has 4404 states and 14639 transitions. [2021-06-05 00:18:49,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 14639 transitions. [2021-06-05 00:18:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 00:18:49,894 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:49,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:18:49,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 00:18:49,894 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2061932734, now seen corresponding path program 1 times [2021-06-05 00:18:49,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:49,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381735926] [2021-06-05 00:18:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:18:50,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:50,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381735926] [2021-06-05 00:18:50,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381735926] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:50,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:50,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:18:50,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686112367] [2021-06-05 00:18:50,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:18:50,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:50,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:18:50,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:18:50,025 INFO L87 Difference]: Start difference. First operand 4404 states and 14639 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:50,187 INFO L93 Difference]: Finished difference Result 4044 states and 12968 transitions. [2021-06-05 00:18:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 00:18:50,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 00:18:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:50,202 INFO L225 Difference]: With dead ends: 4044 [2021-06-05 00:18:50,202 INFO L226 Difference]: Without dead ends: 2928 [2021-06-05 00:18:50,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 129.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 00:18:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2021-06-05 00:18:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2928. [2021-06-05 00:18:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 3.152374444824052) internal successors, (9227), 2927 states have internal predecessors, (9227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 9227 transitions. [2021-06-05 00:18:50,262 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 9227 transitions. Word has length 53 [2021-06-05 00:18:50,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:50,263 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 9227 transitions. [2021-06-05 00:18:50,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 9227 transitions. [2021-06-05 00:18:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 00:18:50,268 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:50,268 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:18:50,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 00:18:50,268 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:50,269 INFO L82 PathProgramCache]: Analyzing trace with hash -792841920, now seen corresponding path program 1 times [2021-06-05 00:18:50,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:50,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864166608] [2021-06-05 00:18:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:18:50,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:50,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864166608] [2021-06-05 00:18:50,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864166608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:50,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:50,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:18:50,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775682286] [2021-06-05 00:18:50,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:18:50,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:50,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:18:50,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:18:50,357 INFO L87 Difference]: Start difference. First operand 2928 states and 9227 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:50,434 INFO L93 Difference]: Finished difference Result 4514 states and 14124 transitions. [2021-06-05 00:18:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 00:18:50,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 00:18:50,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:50,458 INFO L225 Difference]: With dead ends: 4514 [2021-06-05 00:18:50,458 INFO L226 Difference]: Without dead ends: 3144 [2021-06-05 00:18:50,458 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3144 states. [2021-06-05 00:18:50,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3144 to 2928. [2021-06-05 00:18:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2927 states have (on average 3.089169798428425) internal successors, (9042), 2927 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 9042 transitions. [2021-06-05 00:18:50,561 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 9042 transitions. Word has length 57 [2021-06-05 00:18:50,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:50,562 INFO L482 AbstractCegarLoop]: Abstraction has 2928 states and 9042 transitions. [2021-06-05 00:18:50,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 9042 transitions. [2021-06-05 00:18:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 00:18:50,567 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:50,567 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:18:50,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 00:18:50,570 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:50,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:50,571 INFO L82 PathProgramCache]: Analyzing trace with hash -888109470, now seen corresponding path program 1 times [2021-06-05 00:18:50,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:50,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62162909] [2021-06-05 00:18:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:18:50,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:50,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62162909] [2021-06-05 00:18:50,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62162909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:50,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:50,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:18:50,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873975013] [2021-06-05 00:18:50,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:18:50,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:50,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:18:50,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:18:50,670 INFO L87 Difference]: Start difference. First operand 2928 states and 9042 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:50,790 INFO L93 Difference]: Finished difference Result 4848 states and 14951 transitions. [2021-06-05 00:18:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:18:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 00:18:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:50,801 INFO L225 Difference]: With dead ends: 4848 [2021-06-05 00:18:50,801 INFO L226 Difference]: Without dead ends: 3581 [2021-06-05 00:18:50,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2021-06-05 00:18:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3329. [2021-06-05 00:18:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 3328 states have (on average 3.077824519230769) internal successors, (10243), 3328 states have internal predecessors, (10243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 10243 transitions. [2021-06-05 00:18:50,877 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 10243 transitions. Word has length 57 [2021-06-05 00:18:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:50,878 INFO L482 AbstractCegarLoop]: Abstraction has 3329 states and 10243 transitions. [2021-06-05 00:18:50,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 10243 transitions. [2021-06-05 00:18:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 00:18:50,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:50,883 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:18:50,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 00:18:50,883 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:50,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:50,883 INFO L82 PathProgramCache]: Analyzing trace with hash 94478464, now seen corresponding path program 2 times [2021-06-05 00:18:50,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:50,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887128821] [2021-06-05 00:18:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:18:50,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:50,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887128821] [2021-06-05 00:18:50,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887128821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:50,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:50,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:18:50,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248626063] [2021-06-05 00:18:50,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:18:50,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:50,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:18:50,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:18:50,968 INFO L87 Difference]: Start difference. First operand 3329 states and 10243 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:51,050 INFO L93 Difference]: Finished difference Result 4139 states and 12544 transitions. [2021-06-05 00:18:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 00:18:51,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 00:18:51,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:51,055 INFO L225 Difference]: With dead ends: 4139 [2021-06-05 00:18:51,055 INFO L226 Difference]: Without dead ends: 2362 [2021-06-05 00:18:51,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:18:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2021-06-05 00:18:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2200. [2021-06-05 00:18:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 2199 states have (on average 2.916780354706685) internal successors, (6414), 2199 states have internal predecessors, (6414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 6414 transitions. [2021-06-05 00:18:51,140 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 6414 transitions. Word has length 57 [2021-06-05 00:18:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:51,140 INFO L482 AbstractCegarLoop]: Abstraction has 2200 states and 6414 transitions. [2021-06-05 00:18:51,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 6414 transitions. [2021-06-05 00:18:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 00:18:51,144 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:18:51,144 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:18:51,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 00:18:51,144 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:18:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:18:51,145 INFO L82 PathProgramCache]: Analyzing trace with hash 214312334, now seen corresponding path program 2 times [2021-06-05 00:18:51,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:18:51,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928430780] [2021-06-05 00:18:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:18:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:18:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:18:51,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:18:51,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928430780] [2021-06-05 00:18:51,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928430780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:18:51,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:18:51,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 00:18:51,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7937148] [2021-06-05 00:18:51,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 00:18:51,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:18:51,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 00:18:51,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 00:18:51,210 INFO L87 Difference]: Start difference. First operand 2200 states and 6414 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:18:51,289 INFO L93 Difference]: Finished difference Result 1417 states and 3939 transitions. [2021-06-05 00:18:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 00:18:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 00:18:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:18:51,289 INFO L225 Difference]: With dead ends: 1417 [2021-06-05 00:18:51,289 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 00:18:51,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 00:18:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 00:18:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 00:18:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 00:18:51,291 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-06-05 00:18:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:18:51,292 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 00:18:51,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:18:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 00:18:51,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 00:18:51,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 00:18:51,293 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 00:18:51,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:18:51 BasicIcfg [2021-06-05 00:18:51,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 00:18:51,296 INFO L168 Benchmark]: Toolchain (without parser) took 4537.54 ms. Allocated memory was 371.2 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 333.6 MB in the beginning and 1.2 GB in the end (delta: -832.8 MB). Peak memory consumption was 182.6 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:51,297 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 371.2 MB. Free memory is still 351.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 00:18:51,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.61 ms. Allocated memory is still 371.2 MB. Free memory was 333.3 MB in the beginning and 333.1 MB in the end (delta: 205.2 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:51,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.73 ms. Allocated memory is still 371.2 MB. Free memory was 333.1 MB in the beginning and 331.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:51,301 INFO L168 Benchmark]: Boogie Preprocessor took 14.11 ms. Allocated memory is still 371.2 MB. Free memory was 331.0 MB in the beginning and 328.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:51,302 INFO L168 Benchmark]: RCFGBuilder took 389.77 ms. Allocated memory is still 371.2 MB. Free memory was 328.9 MB in the beginning and 304.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:51,302 INFO L168 Benchmark]: TraceAbstraction took 3658.62 ms. Allocated memory was 371.2 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 304.8 MB in the beginning and 1.2 GB in the end (delta: -861.5 MB). Peak memory consumption was 154.6 MB. Max. memory is 16.0 GB. [2021-06-05 00:18:51,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 371.2 MB. Free memory is still 351.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 430.61 ms. Allocated memory is still 371.2 MB. Free memory was 333.3 MB in the beginning and 333.1 MB in the end (delta: 205.2 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 38.73 ms. Allocated memory is still 371.2 MB. Free memory was 333.1 MB in the beginning and 331.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.11 ms. Allocated memory is still 371.2 MB. Free memory was 331.0 MB in the beginning and 328.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 389.77 ms. Allocated memory is still 371.2 MB. Free memory was 328.9 MB in the beginning and 304.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3658.62 ms. Allocated memory was 371.2 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 304.8 MB in the beginning and 1.2 GB in the end (delta: -861.5 MB). Peak memory consumption was 154.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3563.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 117.5ms, AutomataDifference: 1152.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 485.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 792 SDtfs, 1136 SDslu, 2541 SDs, 0 SdLazy, 254 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 181.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 732.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 738.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 630 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.5ms SsaConstructionTime, 170.9ms SatisfiabilityAnalysisTime, 726.5ms InterpolantComputationTime, 381 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 1024 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...