/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:05:21,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:05:21,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:05:21,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:05:21,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:05:21,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:05:21,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:05:21,797 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 [2021-04-15 01:05:21,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:05:21,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:05:21,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:05:21,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:05:21,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:05:21,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:05:21,832 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:05:21,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:05:21,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:05:21,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:05:21,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:05:21,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:05:21,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:05:21,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:05:21,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:05:21,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:05:21,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:05:21,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:05:21,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:05:21,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:05:21,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:05:21,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:05:21,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:05:21,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:05:21,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:05:22,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:05:22,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:05:22,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:05:22,190 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:05:22,192 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:05:22,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-04-15 01:05:22,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0b4a478/494c4f43b979411c9eb5039036a039d0/FLAGc4875a9a2 [2021-04-15 01:05:22,826 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:05:22,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-04-15 01:05:22,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0b4a478/494c4f43b979411c9eb5039036a039d0/FLAGc4875a9a2 [2021-04-15 01:05:23,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0b4a478/494c4f43b979411c9eb5039036a039d0 [2021-04-15 01:05:23,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:05:23,129 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:05:23,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:05:23,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:05:23,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:05:23,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d853541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23, skipping insertion in model container [2021-04-15 01:05:23,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:05:23,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:05:23,335 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i[950,963] [2021-04-15 01:05:23,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:05:23,484 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:05:23,493 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i[950,963] [2021-04-15 01:05:23,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:05:23,571 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:05:23,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23 WrapperNode [2021-04-15 01:05:23,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:05:23,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:05:23,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:05:23,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:05:23,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:05:23,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:05:23,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:05:23,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:05:23,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (1/1) ... [2021-04-15 01:05:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:05:23,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:05:23,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:05:23,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:05:23,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (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 [2021-04-15 01:05:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:05:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 01:05:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:05:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:05:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 01:05:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 01:05:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 01:05:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 01:05:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-15 01:05:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-15 01:05:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:05:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 01:05:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:05:23,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:05:23,729 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:05:24,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:05:24,143 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 01:05:24,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:05:24 BoogieIcfgContainer [2021-04-15 01:05:24,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:05:24,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:05:24,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:05:24,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:05:24,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:05:23" (1/3) ... [2021-04-15 01:05:24,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed87e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:05:24, skipping insertion in model container [2021-04-15 01:05:24,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:05:23" (2/3) ... [2021-04-15 01:05:24,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed87e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:05:24, skipping insertion in model container [2021-04-15 01:05:24,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:05:24" (3/3) ... [2021-04-15 01:05:24,151 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2021-04-15 01:05:24,156 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:05:24,156 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:05:24,160 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:05:24,161 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:05:24,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,184 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,184 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,184 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,191 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:05:24,199 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 01:05:24,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-15 01:05:24,230 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:05:24,230 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:05:24,230 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:05:24,230 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:05:24,230 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:05:24,230 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:05:24,230 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:05:24,230 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:05:24,239 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-04-15 01:05:24,945 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-04-15 01:05:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-04-15 01:05:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-15 01:05:25,037 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:25,041 INFO L551 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] [2021-04-15 01:05:25,042 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1370598138, now seen corresponding path program 1 times [2021-04-15 01:05:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:25,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283331661] [2021-04-15 01:05:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:25,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283331661] [2021-04-15 01:05:25,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:25,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:05:25,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419059188] [2021-04-15 01:05:25,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:05:25,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:05:25,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:05:25,501 INFO L87 Difference]: Start difference. First operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-04-15 01:05:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:26,026 INFO L93 Difference]: Finished difference Result 20813 states and 71915 transitions. [2021-04-15 01:05:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:05:26,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2021-04-15 01:05:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:26,208 INFO L225 Difference]: With dead ends: 20813 [2021-04-15 01:05:26,208 INFO L226 Difference]: Without dead ends: 6422 [2021-04-15 01:05:26,210 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:05:26,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2021-04-15 01:05:26,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 5174. [2021-04-15 01:05:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5174 states, 5173 states have (on average 3.341387976029383) internal successors, (17285), 5173 states have internal predecessors, (17285), 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) [2021-04-15 01:05:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 17285 transitions. [2021-04-15 01:05:26,584 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 17285 transitions. Word has length 39 [2021-04-15 01:05:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:26,585 INFO L480 AbstractCegarLoop]: Abstraction has 5174 states and 17285 transitions. [2021-04-15 01:05:26,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-04-15 01:05:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 17285 transitions. [2021-04-15 01:05:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-15 01:05:26,599 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:26,600 INFO L551 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] [2021-04-15 01:05:26,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:05:26,605 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1519374023, now seen corresponding path program 1 times [2021-04-15 01:05:26,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:26,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712075491] [2021-04-15 01:05:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:26,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712075491] [2021-04-15 01:05:26,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:26,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:05:26,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408473501] [2021-04-15 01:05:26,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:05:26,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:05:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:05:26,798 INFO L87 Difference]: Start difference. First operand 5174 states and 17285 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 01:05:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:27,107 INFO L93 Difference]: Finished difference Result 7638 states and 25202 transitions. [2021-04-15 01:05:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:05:27,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-04-15 01:05:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:27,141 INFO L225 Difference]: With dead ends: 7638 [2021-04-15 01:05:27,141 INFO L226 Difference]: Without dead ends: 6002 [2021-04-15 01:05:27,143 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 222.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:05:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2021-04-15 01:05:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 4994. [2021-04-15 01:05:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4994 states, 4993 states have (on average 3.3248547967154014) internal successors, (16601), 4993 states have internal predecessors, (16601), 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) [2021-04-15 01:05:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4994 states to 4994 states and 16601 transitions. [2021-04-15 01:05:27,324 INFO L78 Accepts]: Start accepts. Automaton has 4994 states and 16601 transitions. Word has length 41 [2021-04-15 01:05:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:27,325 INFO L480 AbstractCegarLoop]: Abstraction has 4994 states and 16601 transitions. [2021-04-15 01:05:27,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 01:05:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4994 states and 16601 transitions. [2021-04-15 01:05:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-15 01:05:27,333 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:27,333 INFO L551 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] [2021-04-15 01:05:27,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:05:27,334 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1678988729, now seen corresponding path program 1 times [2021-04-15 01:05:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:27,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049439918] [2021-04-15 01:05:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:27,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049439918] [2021-04-15 01:05:27,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:27,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:05:27,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640348997] [2021-04-15 01:05:27,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:05:27,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:27,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:05:27,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:05:27,441 INFO L87 Difference]: Start difference. First operand 4994 states and 16601 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 01:05:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:27,724 INFO L93 Difference]: Finished difference Result 7154 states and 23494 transitions. [2021-04-15 01:05:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:05:27,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-04-15 01:05:27,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:27,765 INFO L225 Difference]: With dead ends: 7154 [2021-04-15 01:05:27,766 INFO L226 Difference]: Without dead ends: 5534 [2021-04-15 01:05:27,766 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 177.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:05:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2021-04-15 01:05:27,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 4518. [2021-04-15 01:05:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4517 states have (on average 3.302855877794997) internal successors, (14919), 4517 states have internal predecessors, (14919), 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) [2021-04-15 01:05:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 14919 transitions. [2021-04-15 01:05:27,914 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 14919 transitions. Word has length 41 [2021-04-15 01:05:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:27,915 INFO L480 AbstractCegarLoop]: Abstraction has 4518 states and 14919 transitions. [2021-04-15 01:05:27,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 01:05:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 14919 transitions. [2021-04-15 01:05:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-04-15 01:05:27,926 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:27,926 INFO L551 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] [2021-04-15 01:05:27,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:05:27,926 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1035384776, now seen corresponding path program 1 times [2021-04-15 01:05:27,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:27,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115904087] [2021-04-15 01:05:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:28,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115904087] [2021-04-15 01:05:28,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:28,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:05:28,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784229425] [2021-04-15 01:05:28,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:05:28,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:28,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:05:28,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:05:28,077 INFO L87 Difference]: Start difference. First operand 4518 states and 14919 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-04-15 01:05:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:28,249 INFO L93 Difference]: Finished difference Result 5693 states and 18407 transitions. [2021-04-15 01:05:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:05:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2021-04-15 01:05:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:28,265 INFO L225 Difference]: With dead ends: 5693 [2021-04-15 01:05:28,265 INFO L226 Difference]: Without dead ends: 4033 [2021-04-15 01:05:28,265 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 140.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:05:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-04-15 01:05:28,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 4033. [2021-04-15 01:05:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4032 states have (on average 3.226438492063492) internal successors, (13009), 4032 states have internal predecessors, (13009), 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) [2021-04-15 01:05:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 13009 transitions. [2021-04-15 01:05:28,376 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 13009 transitions. Word has length 43 [2021-04-15 01:05:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:28,376 INFO L480 AbstractCegarLoop]: Abstraction has 4033 states and 13009 transitions. [2021-04-15 01:05:28,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-04-15 01:05:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 13009 transitions. [2021-04-15 01:05:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-15 01:05:28,386 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:28,386 INFO L551 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] [2021-04-15 01:05:28,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:05:28,386 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:28,387 INFO L82 PathProgramCache]: Analyzing trace with hash 454639079, now seen corresponding path program 1 times [2021-04-15 01:05:28,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:28,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177773055] [2021-04-15 01:05:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:28,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177773055] [2021-04-15 01:05:28,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:28,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:05:28,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211174974] [2021-04-15 01:05:28,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:05:28,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:05:28,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:05:28,492 INFO L87 Difference]: Start difference. First operand 4033 states and 13009 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-04-15 01:05:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:28,643 INFO L93 Difference]: Finished difference Result 4033 states and 12547 transitions. [2021-04-15 01:05:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 01:05:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-04-15 01:05:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:28,651 INFO L225 Difference]: With dead ends: 4033 [2021-04-15 01:05:28,652 INFO L226 Difference]: Without dead ends: 2641 [2021-04-15 01:05:28,652 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:05:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-04-15 01:05:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2577. [2021-04-15 01:05:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2576 states have (on average 3.042313664596273) internal successors, (7837), 2576 states have internal predecessors, (7837), 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) [2021-04-15 01:05:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 7837 transitions. [2021-04-15 01:05:28,776 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 7837 transitions. Word has length 45 [2021-04-15 01:05:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:28,776 INFO L480 AbstractCegarLoop]: Abstraction has 2577 states and 7837 transitions. [2021-04-15 01:05:28,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-04-15 01:05:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 7837 transitions. [2021-04-15 01:05:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-15 01:05:28,784 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:28,784 INFO L551 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] [2021-04-15 01:05:28,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 01:05:28,784 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:28,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:28,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1823523928, now seen corresponding path program 1 times [2021-04-15 01:05:28,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:28,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504339163] [2021-04-15 01:05:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:28,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504339163] [2021-04-15 01:05:28,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:28,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:05:28,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643562646] [2021-04-15 01:05:28,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:05:28,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:05:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:05:28,923 INFO L87 Difference]: Start difference. First operand 2577 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-04-15 01:05:29,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:29,086 INFO L93 Difference]: Finished difference Result 3131 states and 9376 transitions. [2021-04-15 01:05:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 01:05:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 47 [2021-04-15 01:05:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:29,096 INFO L225 Difference]: With dead ends: 3131 [2021-04-15 01:05:29,097 INFO L226 Difference]: Without dead ends: 2072 [2021-04-15 01:05:29,097 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 144.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-04-15 01:05:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-04-15 01:05:29,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1758. [2021-04-15 01:05:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1757 states have (on average 2.9288560045532157) internal successors, (5146), 1757 states have internal predecessors, (5146), 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) [2021-04-15 01:05:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 5146 transitions. [2021-04-15 01:05:29,164 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 5146 transitions. Word has length 47 [2021-04-15 01:05:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:29,164 INFO L480 AbstractCegarLoop]: Abstraction has 1758 states and 5146 transitions. [2021-04-15 01:05:29,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-04-15 01:05:29,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 5146 transitions. [2021-04-15 01:05:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-15 01:05:29,168 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:29,168 INFO L551 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] [2021-04-15 01:05:29,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 01:05:29,169 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:29,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1345192616, now seen corresponding path program 1 times [2021-04-15 01:05:29,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:29,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496659767] [2021-04-15 01:05:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:29,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496659767] [2021-04-15 01:05:29,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:29,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:05:29,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597937389] [2021-04-15 01:05:29,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:05:29,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:29,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:05:29,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:05:29,264 INFO L87 Difference]: Start difference. First operand 1758 states and 5146 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-04-15 01:05:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:29,323 INFO L93 Difference]: Finished difference Result 2419 states and 7078 transitions. [2021-04-15 01:05:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-15 01:05:29,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2021-04-15 01:05:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:29,329 INFO L225 Difference]: With dead ends: 2419 [2021-04-15 01:05:29,329 INFO L226 Difference]: Without dead ends: 1916 [2021-04-15 01:05:29,330 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-04-15 01:05:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2021-04-15 01:05:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1754. [2021-04-15 01:05:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1753 states have (on average 2.926411865373645) internal successors, (5130), 1753 states have internal predecessors, (5130), 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) [2021-04-15 01:05:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 5130 transitions. [2021-04-15 01:05:29,368 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 5130 transitions. Word has length 47 [2021-04-15 01:05:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:29,368 INFO L480 AbstractCegarLoop]: Abstraction has 1754 states and 5130 transitions. [2021-04-15 01:05:29,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-04-15 01:05:29,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 5130 transitions. [2021-04-15 01:05:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-15 01:05:29,371 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:05:29,371 INFO L551 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] [2021-04-15 01:05:29,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-15 01:05:29,372 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:05:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:05:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2137856274, now seen corresponding path program 2 times [2021-04-15 01:05:29,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:05:29,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142182328] [2021-04-15 01:05:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:05:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:05:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:05:29,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142182328] [2021-04-15 01:05:29,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:05:29,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:05:29,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811564630] [2021-04-15 01:05:29,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:05:29,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:05:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:05:29,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:05:29,514 INFO L87 Difference]: Start difference. First operand 1754 states and 5130 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-04-15 01:05:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:05:29,613 INFO L93 Difference]: Finished difference Result 1079 states and 3015 transitions. [2021-04-15 01:05:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 01:05:29,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 47 [2021-04-15 01:05:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:05:29,613 INFO L225 Difference]: With dead ends: 1079 [2021-04-15 01:05:29,614 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:05:29,614 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:05:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:05:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:05:29,614 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) [2021-04-15 01:05:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:05:29,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-04-15 01:05:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:05:29,615 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:05:29,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-04-15 01:05:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:05:29,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:05:29,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-15 01:05:29,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:05:29 BasicIcfg [2021-04-15 01:05:29,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:05:29,621 INFO L168 Benchmark]: Toolchain (without parser) took 6490.21 ms. Allocated memory was 333.4 MB in the beginning and 824.2 MB in the end (delta: 490.7 MB). Free memory was 296.5 MB in the beginning and 626.3 MB in the end (delta: -329.8 MB). Peak memory consumption was 162.7 MB. Max. memory is 16.0 GB. [2021-04-15 01:05:29,623 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 333.4 MB. Free memory was 314.8 MB in the beginning and 314.7 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:05:29,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.01 ms. Allocated memory is still 333.4 MB. Free memory was 296.3 MB in the beginning and 295.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:05:29,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.20 ms. Allocated memory is still 333.4 MB. Free memory was 295.3 MB in the beginning and 293.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:05:29,626 INFO L168 Benchmark]: Boogie Preprocessor took 17.83 ms. Allocated memory is still 333.4 MB. Free memory was 293.2 MB in the beginning and 292.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:05:29,628 INFO L168 Benchmark]: RCFGBuilder took 520.86 ms. Allocated memory is still 333.4 MB. Free memory was 292.1 MB in the beginning and 268.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:05:29,628 INFO L168 Benchmark]: TraceAbstraction took 5473.00 ms. Allocated memory was 333.4 MB in the beginning and 824.2 MB in the end (delta: 490.7 MB). Free memory was 268.0 MB in the beginning and 626.3 MB in the end (delta: -358.3 MB). Peak memory consumption was 134.5 MB. Max. memory is 16.0 GB. [2021-04-15 01:05:29,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 333.4 MB. Free memory was 314.8 MB in the beginning and 314.7 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 439.01 ms. Allocated memory is still 333.4 MB. Free memory was 296.3 MB in the beginning and 295.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.20 ms. Allocated memory is still 333.4 MB. Free memory was 295.3 MB in the beginning and 293.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.83 ms. Allocated memory is still 333.4 MB. Free memory was 293.2 MB in the beginning and 292.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 520.86 ms. Allocated memory is still 333.4 MB. Free memory was 292.1 MB in the beginning and 268.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5473.00 ms. Allocated memory was 333.4 MB in the beginning and 824.2 MB in the end (delta: 490.7 MB). Free memory was 268.0 MB in the beginning and 626.3 MB in the end (delta: -358.3 MB). Peak memory consumption was 134.5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5387.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 144.8ms, AutomataDifference: 2123.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 714.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 819 SDtfs, 1263 SDslu, 2669 SDs, 0 SdLazy, 335 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 390.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1120.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=0, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1031.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 3812 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.8ms SsaConstructionTime, 185.7ms SatisfiabilityAnalysisTime, 936.6ms InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 342 ConstructedInterpolants, 0 QuantifiedInterpolants, 1404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...