/usr/bin/java -Xmx8000000000 -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/safe037_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:52:27,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:52:27,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:52:27,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:52:27,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:52:27,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:52:27,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:52:27,833 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 [2021-07-09 16:52:27,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:52:27,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:52:27,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:52:27,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:52:27,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:52:27,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:52:27,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:52:27,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:52:27,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:52:27,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:52:27,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:52:27,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:52:27,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:52:27,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:52:27,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:52:27,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:52:27,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:52:27,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:52:28,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:52:28,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:52:28,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:52:28,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:52:28,248 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:52:28,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2021-07-09 16:52:28,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18c66113/972f2da349bb4957aa2f74bf92ff3052/FLAG4a072e4e9 [2021-07-09 16:52:28,838 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:52:28,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2021-07-09 16:52:28,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18c66113/972f2da349bb4957aa2f74bf92ff3052/FLAG4a072e4e9 [2021-07-09 16:52:29,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18c66113/972f2da349bb4957aa2f74bf92ff3052 [2021-07-09 16:52:29,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:52:29,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:52:29,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:52:29,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:52:29,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:52:29,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10de5834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29, skipping insertion in model container [2021-07-09 16:52:29,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:52:29,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:52:29,430 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/safe037_pso.opt.i[949,962] [2021-07-09 16:52:29,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:52:29,575 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:52:29,583 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/safe037_pso.opt.i[949,962] [2021-07-09 16:52:29,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:52:29,635 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:52:29,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29 WrapperNode [2021-07-09 16:52:29,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:52:29,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:52:29,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:52:29,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:52:29,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:52:29,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:52:29,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:52:29,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:52:29,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (1/1) ... [2021-07-09 16:52:29,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:52:29,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:52:29,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:52:29,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:52:29,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (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 [2021-07-09 16:52:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:52:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:52:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:52:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:52:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 16:52:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 16:52:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 16:52:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 16:52:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 16:52:29,853 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 16:52:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:52:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:52:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:52:29,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:52:29,854 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:52:30,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:52:30,220 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 16:52:30,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:52:30 BoogieIcfgContainer [2021-07-09 16:52:30,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:52:30,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:52:30,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:52:30,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:52:30,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:52:29" (1/3) ... [2021-07-09 16:52:30,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6634ede7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:52:30, skipping insertion in model container [2021-07-09 16:52:30,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:52:29" (2/3) ... [2021-07-09 16:52:30,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6634ede7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:52:30, skipping insertion in model container [2021-07-09 16:52:30,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:52:30" (3/3) ... [2021-07-09 16:52:30,226 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_pso.opt.i [2021-07-09 16:52:30,235 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:52:30,235 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:52:30,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:52:30,236 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:52:30,261 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,261 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,261 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,261 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,261 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,261 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,263 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,263 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,289 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,289 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,290 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:52:30,297 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:52:30,310 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 16:52:30,321 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:52:30,321 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:52:30,321 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:52:30,321 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:52:30,321 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:52:30,322 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:52:30,322 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:52:30,322 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:52:30,328 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-07-09 16:52:30,463 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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) [2021-07-09 16:52:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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) [2021-07-09 16:52:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-09 16:52:30,504 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:30,505 INFO L508 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] [2021-07-09 16:52:30,505 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1743011939, now seen corresponding path program 1 times [2021-07-09 16:52:30,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:30,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025163060] [2021-07-09 16:52:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:30,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:30,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025163060] [2021-07-09 16:52:30,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025163060] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:30,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:30,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:52:30,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104832816] [2021-07-09 16:52:30,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:52:30,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:30,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:52:30,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:52:30,958 INFO L87 Difference]: Start difference. First operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-07-09 16:52:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:31,223 INFO L93 Difference]: Finished difference Result 6507 states and 21851 transitions. [2021-07-09 16:52:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:52:31,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2021-07-09 16:52:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:31,271 INFO L225 Difference]: With dead ends: 6507 [2021-07-09 16:52:31,271 INFO L226 Difference]: Without dead ends: 4513 [2021-07-09 16:52:31,272 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:52:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-07-09 16:52:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4513. [2021-07-09 16:52:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4512 states have (on average 3.3324468085106385) internal successors, (15036), 4512 states have internal predecessors, (15036), 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) [2021-07-09 16:52:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 15036 transitions. [2021-07-09 16:52:31,426 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 15036 transitions. Word has length 50 [2021-07-09 16:52:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:31,427 INFO L482 AbstractCegarLoop]: Abstraction has 4513 states and 15036 transitions. [2021-07-09 16:52:31,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-07-09 16:52:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 15036 transitions. [2021-07-09 16:52:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:52:31,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:31,434 INFO L508 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] [2021-07-09 16:52:31,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:52:31,435 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:31,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:31,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1473884635, now seen corresponding path program 1 times [2021-07-09 16:52:31,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:31,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090222418] [2021-07-09 16:52:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:31,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:31,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090222418] [2021-07-09 16:52:31,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090222418] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:31,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:31,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:52:31,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731538756] [2021-07-09 16:52:31,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:52:31,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:31,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:52:31,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:52:31,563 INFO L87 Difference]: Start difference. First operand 4513 states and 15036 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-07-09 16:52:31,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:31,717 INFO L93 Difference]: Finished difference Result 4045 states and 12969 transitions. [2021-07-09 16:52:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:52:31,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-07-09 16:52:31,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:31,730 INFO L225 Difference]: With dead ends: 4045 [2021-07-09 16:52:31,730 INFO L226 Difference]: Without dead ends: 2929 [2021-07-09 16:52:31,731 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:52:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2021-07-09 16:52:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2929. [2021-07-09 16:52:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2928 states have (on average 3.151639344262295) internal successors, (9228), 2928 states have internal predecessors, (9228), 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) [2021-07-09 16:52:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 9228 transitions. [2021-07-09 16:52:31,846 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 9228 transitions. Word has length 54 [2021-07-09 16:52:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:31,846 INFO L482 AbstractCegarLoop]: Abstraction has 2929 states and 9228 transitions. [2021-07-09 16:52:31,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-07-09 16:52:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 9228 transitions. [2021-07-09 16:52:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-09 16:52:31,855 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:31,855 INFO L508 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, 1] [2021-07-09 16:52:31,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:52:31,855 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:31,856 INFO L82 PathProgramCache]: Analyzing trace with hash -737931173, now seen corresponding path program 1 times [2021-07-09 16:52:31,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:31,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20273512] [2021-07-09 16:52:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:31,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:31,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20273512] [2021-07-09 16:52:31,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20273512] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:31,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:31,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:52:31,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015559380] [2021-07-09 16:52:31,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:52:31,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:31,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:52:31,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:52:31,945 INFO L87 Difference]: Start difference. First operand 2929 states and 9228 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-07-09 16:52:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:32,102 INFO L93 Difference]: Finished difference Result 2281 states and 7005 transitions. [2021-07-09 16:52:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 16:52:32,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 58 [2021-07-09 16:52:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:32,109 INFO L225 Difference]: With dead ends: 2281 [2021-07-09 16:52:32,110 INFO L226 Difference]: Without dead ends: 1741 [2021-07-09 16:52:32,110 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 129.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:52:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-07-09 16:52:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2021-07-09 16:52:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 3.027586206896552) internal successors, (5268), 1740 states have internal predecessors, (5268), 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) [2021-07-09 16:52:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 5268 transitions. [2021-07-09 16:52:32,142 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 5268 transitions. Word has length 58 [2021-07-09 16:52:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:32,142 INFO L482 AbstractCegarLoop]: Abstraction has 1741 states and 5268 transitions. [2021-07-09 16:52:32,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-07-09 16:52:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 5268 transitions. [2021-07-09 16:52:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-09 16:52:32,145 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:32,146 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-09 16:52:32,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:52:32,146 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:32,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2030228327, now seen corresponding path program 1 times [2021-07-09 16:52:32,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:32,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987720965] [2021-07-09 16:52:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:32,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:32,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987720965] [2021-07-09 16:52:32,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987720965] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:32,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:32,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:52:32,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049334524] [2021-07-09 16:52:32,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:52:32,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:32,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:52:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:52:32,244 INFO L87 Difference]: Start difference. First operand 1741 states and 5268 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-07-09 16:52:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:32,397 INFO L93 Difference]: Finished difference Result 2404 states and 7288 transitions. [2021-07-09 16:52:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:52:32,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-07-09 16:52:32,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:32,405 INFO L225 Difference]: With dead ends: 2404 [2021-07-09 16:52:32,405 INFO L226 Difference]: Without dead ends: 1713 [2021-07-09 16:52:32,405 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:52:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-07-09 16:52:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1485. [2021-07-09 16:52:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 2.967654986522911) internal successors, (4404), 1484 states have internal predecessors, (4404), 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) [2021-07-09 16:52:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4404 transitions. [2021-07-09 16:52:32,436 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4404 transitions. Word has length 62 [2021-07-09 16:52:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:32,436 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4404 transitions. [2021-07-09 16:52:32,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-07-09 16:52:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4404 transitions. [2021-07-09 16:52:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-09 16:52:32,439 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:32,439 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-09 16:52:32,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:52:32,439 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:32,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1275875013, now seen corresponding path program 2 times [2021-07-09 16:52:32,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:32,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306692205] [2021-07-09 16:52:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:32,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:32,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306692205] [2021-07-09 16:52:32,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306692205] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:32,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:32,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:52:32,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094379790] [2021-07-09 16:52:32,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:52:32,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:32,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:52:32,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:52:32,536 INFO L87 Difference]: Start difference. First operand 1485 states and 4404 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2021-07-09 16:52:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:32,630 INFO L93 Difference]: Finished difference Result 2148 states and 6424 transitions. [2021-07-09 16:52:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:52:32,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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 62 [2021-07-09 16:52:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:32,635 INFO L225 Difference]: With dead ends: 2148 [2021-07-09 16:52:32,635 INFO L226 Difference]: Without dead ends: 1146 [2021-07-09 16:52:32,635 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:52:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-07-09 16:52:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2021-07-09 16:52:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.958951965065502) internal successors, (3388), 1145 states have internal predecessors, (3388), 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) [2021-07-09 16:52:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 3388 transitions. [2021-07-09 16:52:32,656 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 3388 transitions. Word has length 62 [2021-07-09 16:52:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:32,657 INFO L482 AbstractCegarLoop]: Abstraction has 1146 states and 3388 transitions. [2021-07-09 16:52:32,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2021-07-09 16:52:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 3388 transitions. [2021-07-09 16:52:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-09 16:52:32,659 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:32,659 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-09 16:52:32,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:52:32,659 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:32,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1863126593, now seen corresponding path program 3 times [2021-07-09 16:52:32,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:32,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907028960] [2021-07-09 16:52:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:32,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:32,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907028960] [2021-07-09 16:52:32,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907028960] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:32,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:32,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:52:32,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975404032] [2021-07-09 16:52:32,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:52:32,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:32,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:52:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:52:32,738 INFO L87 Difference]: Start difference. First operand 1146 states and 3388 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-07-09 16:52:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:32,828 INFO L93 Difference]: Finished difference Result 1629 states and 4829 transitions. [2021-07-09 16:52:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:52:32,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-07-09 16:52:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:32,832 INFO L225 Difference]: With dead ends: 1629 [2021-07-09 16:52:32,832 INFO L226 Difference]: Without dead ends: 806 [2021-07-09 16:52:32,832 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:52:32,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-07-09 16:52:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2021-07-09 16:52:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 2.8732919254658387) internal successors, (2313), 805 states have internal predecessors, (2313), 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) [2021-07-09 16:52:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2313 transitions. [2021-07-09 16:52:32,846 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2313 transitions. Word has length 62 [2021-07-09 16:52:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:32,846 INFO L482 AbstractCegarLoop]: Abstraction has 806 states and 2313 transitions. [2021-07-09 16:52:32,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-07-09 16:52:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2313 transitions. [2021-07-09 16:52:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-09 16:52:32,848 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:52:32,861 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-09 16:52:32,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:52:32,862 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:52:32,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:52:32,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1245371587, now seen corresponding path program 4 times [2021-07-09 16:52:32,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:52:32,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264667229] [2021-07-09 16:52:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:52:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:52:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:52:32,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:52:32,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264667229] [2021-07-09 16:52:32,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264667229] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:52:32,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:52:32,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:52:32,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388575811] [2021-07-09 16:52:32,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:52:32,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:52:32,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:52:32,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:52:32,939 INFO L87 Difference]: Start difference. First operand 806 states and 2313 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-07-09 16:52:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:52:33,025 INFO L93 Difference]: Finished difference Result 752 states and 2151 transitions. [2021-07-09 16:52:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 16:52:33,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-07-09 16:52:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:52:33,025 INFO L225 Difference]: With dead ends: 752 [2021-07-09 16:52:33,026 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:52:33,026 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:52:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:52:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:52:33,026 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) [2021-07-09 16:52:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:52:33,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-07-09 16:52:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:52:33,026 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:52:33,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-07-09 16:52:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:52:33,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:52:33,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 16:52:33,028 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:52:33,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:52:33 BasicIcfg [2021-07-09 16:52:33,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:52:33,031 INFO L168 Benchmark]: Toolchain (without parser) took 3904.81 ms. Allocated memory was 187.7 MB in the beginning and 496.0 MB in the end (delta: 308.3 MB). Free memory was 149.5 MB in the beginning and 390.4 MB in the end (delta: -240.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:33,031 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 187.7 MB. Free memory is still 167.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:52:33,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.14 ms. Allocated memory is still 187.7 MB. Free memory was 149.2 MB in the beginning and 160.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:33,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.54 ms. Allocated memory is still 187.7 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:33,032 INFO L168 Benchmark]: Boogie Preprocessor took 24.41 ms. Allocated memory is still 187.7 MB. Free memory was 158.1 MB in the beginning and 156.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:33,032 INFO L168 Benchmark]: RCFGBuilder took 515.59 ms. Allocated memory is still 187.7 MB. Free memory was 156.9 MB in the beginning and 133.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:33,032 INFO L168 Benchmark]: TraceAbstraction took 2808.00 ms. Allocated memory was 187.7 MB in the beginning and 496.0 MB in the end (delta: 308.3 MB). Free memory was 132.9 MB in the beginning and 390.4 MB in the end (delta: -257.4 MB). Peak memory consumption was 52.2 MB. Max. memory is 8.0 GB. [2021-07-09 16:52:33,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 187.7 MB. Free memory is still 167.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 495.14 ms. Allocated memory is still 187.7 MB. Free memory was 149.2 MB in the beginning and 160.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.54 ms. Allocated memory is still 187.7 MB. Free memory was 160.2 MB in the beginning and 158.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.41 ms. Allocated memory is still 187.7 MB. Free memory was 158.1 MB in the beginning and 156.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.59 ms. Allocated memory is still 187.7 MB. Free memory was 156.9 MB in the beginning and 133.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2808.00 ms. Allocated memory was 187.7 MB in the beginning and 496.0 MB in the end (delta: 308.3 MB). Free memory was 132.9 MB in the beginning and 390.4 MB in the end (delta: -257.4 MB). Peak memory consumption was 52.2 MB. Max. memory is 8.0 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2707.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 65.2ms, AutomataDifference: 1124.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 141.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 724 SDtfs, 919 SDslu, 2701 SDs, 0 SdLazy, 260 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 193.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 841.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5560occurred 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: 356.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 228 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.5ms SsaConstructionTime, 129.5ms SatisfiabilityAnalysisTime, 652.8ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333 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...