/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-18 00:03:21,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-18 00:03:21,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-18 00:03:21,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-18 00:03:21,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-18 00:03:21,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-18 00:03:21,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-18 00:03:21,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-18 00:03:21,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-18 00:03:21,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-18 00:03:21,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-18 00:03:21,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-18 00:03:21,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-18 00:03:21,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-18 00:03:21,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-18 00:03:21,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-18 00:03:21,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-18 00:03:21,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-18 00:03:21,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-18 00:03:21,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-18 00:03:21,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-18 00:03:21,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-18 00:03:21,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-18 00:03:21,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-18 00:03:21,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-18 00:03:21,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-18 00:03:21,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-18 00:03:21,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-18 00:03:21,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-18 00:03:21,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-18 00:03:21,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-18 00:03:21,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-18 00:03:21,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-18 00:03:21,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-18 00:03:21,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-18 00:03:21,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-18 00:03:21,619 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-keepdead.epf [2020-12-18 00:03:21,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-18 00:03:21,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-18 00:03:21,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-18 00:03:21,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-18 00:03:21,675 INFO L138 SettingsManager]: * Use SBE=true [2020-12-18 00:03:21,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-18 00:03:21,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-18 00:03:21,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-18 00:03:21,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-18 00:03:21,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-18 00:03:21,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-18 00:03:21,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-18 00:03:21,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-18 00:03:21,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-18 00:03:21,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-18 00:03:21,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-18 00:03:21,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-18 00:03:21,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-18 00:03:21,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-18 00:03:21,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-18 00:03:21,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-18 00:03:21,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-18 00:03:21,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-18 00:03:21,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-18 00:03:21,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-18 00:03:21,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-18 00:03:21,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-18 00:03:21,682 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-18 00:03:21,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-18 00:03:21,682 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-18 00:03:21,682 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-18 00:03:21,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-18 00:03:22,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-18 00:03:22,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-18 00:03:22,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-18 00:03:22,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-18 00:03:22,118 INFO L275 PluginConnector]: CDTParser initialized [2020-12-18 00:03:22,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-12-18 00:03:22,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381fadbad/dcaf592767fc4e2ead6d7a0efc2c4283/FLAGe26259b6f [2020-12-18 00:03:22,968 INFO L306 CDTParser]: Found 1 translation units. [2020-12-18 00:03:22,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-12-18 00:03:22,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381fadbad/dcaf592767fc4e2ead6d7a0efc2c4283/FLAGe26259b6f [2020-12-18 00:03:23,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/381fadbad/dcaf592767fc4e2ead6d7a0efc2c4283 [2020-12-18 00:03:23,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-18 00:03:23,231 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-18 00:03:23,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-18 00:03:23,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-18 00:03:23,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-18 00:03:23,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2e1676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23, skipping insertion in model container [2020-12-18 00:03:23,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-18 00:03:23,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-18 00:03:23,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:03:23,680 INFO L203 MainTranslator]: Completed pre-run [2020-12-18 00:03:23,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:03:23,846 INFO L208 MainTranslator]: Completed translation [2020-12-18 00:03:23,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23 WrapperNode [2020-12-18 00:03:23,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-18 00:03:23,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-18 00:03:23,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-18 00:03:23,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-18 00:03:23,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-18 00:03:23,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-18 00:03:23,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-18 00:03:23,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-18 00:03:23,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (1/1) ... [2020-12-18 00:03:23,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-18 00:03:23,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-18 00:03:23,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-18 00:03:23,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-18 00:03:23,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (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 [2020-12-18 00:03:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-18 00:03:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-18 00:03:24,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-18 00:03:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-18 00:03:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-18 00:03:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-18 00:03:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-18 00:03:24,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-18 00:03:24,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-18 00:03:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-18 00:03:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-18 00:03:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-18 00:03:24,046 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-18 00:03:24,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-18 00:03:24,437 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-18 00:03:24,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:03:24 BoogieIcfgContainer [2020-12-18 00:03:24,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-18 00:03:24,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-18 00:03:24,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-18 00:03:24,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-18 00:03:24,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:03:23" (1/3) ... [2020-12-18 00:03:24,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7c3647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:03:24, skipping insertion in model container [2020-12-18 00:03:24,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:03:23" (2/3) ... [2020-12-18 00:03:24,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7c3647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:03:24, skipping insertion in model container [2020-12-18 00:03:24,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:03:24" (3/3) ... [2020-12-18 00:03:24,448 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2020-12-18 00:03:24,464 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-18 00:03:24,464 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-18 00:03:24,466 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-18 00:03:24,467 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-18 00:03:24,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,499 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,500 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,501 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,508 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,514 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,514 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,514 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,515 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:03:24,520 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-18 00:03:24,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-18 00:03:24,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-18 00:03:24,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-18 00:03:24,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-18 00:03:24,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-18 00:03:24,557 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-18 00:03:24,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-18 00:03:24,558 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-18 00:03:24,558 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-18 00:03:24,570 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 65 transitions, 140 flow [2020-12-18 00:03:24,670 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 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) [2020-12-18 00:03:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 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) [2020-12-18 00:03:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-18 00:03:24,698 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:24,699 INFO L504 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] [2020-12-18 00:03:24,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:24,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1361290816, now seen corresponding path program 1 times [2020-12-18 00:03:24,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:24,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925572878] [2020-12-18 00:03:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:25,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925572878] [2020-12-18 00:03:25,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:25,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-18 00:03:25,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179418930] [2020-12-18 00:03:25,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-18 00:03:25,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:25,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-18 00:03:25,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-18 00:03:25,242 INFO L87 Difference]: Start difference. First operand has 1321 states, 1319 states have (on average 2.7498104624715696) internal successors, (3627), 1320 states have internal predecessors, (3627), 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 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2020-12-18 00:03:25,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:25,516 INFO L93 Difference]: Finished difference Result 1116 states and 2790 transitions. [2020-12-18 00:03:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-18 00:03:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 37 [2020-12-18 00:03:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:25,521 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:03:25,521 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 2790 transitions. Word has length 37 [2020-12-18 00:03:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:25,523 INFO L481 AbstractCegarLoop]: Abstraction has 1116 states and 2790 transitions. [2020-12-18 00:03:25,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2020-12-18 00:03:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 2790 transitions. [2020-12-18 00:03:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-18 00:03:25,534 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:25,534 INFO L504 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] [2020-12-18 00:03:25,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-18 00:03:25,535 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash 160702942, now seen corresponding path program 1 times [2020-12-18 00:03:25,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:25,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974890750] [2020-12-18 00:03:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:25,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974890750] [2020-12-18 00:03:25,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:25,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:03:25,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619234211] [2020-12-18 00:03:25,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:03:25,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:25,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:03:25,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:03:25,808 INFO L87 Difference]: Start difference. First operand 1116 states and 2790 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) [2020-12-18 00:03:26,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:26,052 INFO L93 Difference]: Finished difference Result 753 states and 1798 transitions. [2020-12-18 00:03:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-18 00:03:26,053 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 [2020-12-18 00:03:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:26,055 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-18 00:03:26,055 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1798 transitions. Word has length 41 [2020-12-18 00:03:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:26,056 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1798 transitions. [2020-12-18 00:03:26,056 INFO L482 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) [2020-12-18 00:03:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1798 transitions. [2020-12-18 00:03:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-18 00:03:26,059 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:26,060 INFO L504 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] [2020-12-18 00:03:26,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-18 00:03:26,060 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash 96714268, now seen corresponding path program 1 times [2020-12-18 00:03:26,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:26,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264895705] [2020-12-18 00:03:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:26,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264895705] [2020-12-18 00:03:26,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:26,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:03:26,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972512296] [2020-12-18 00:03:26,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:03:26,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:26,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:03:26,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:03:26,200 INFO L87 Difference]: Start difference. First operand 753 states and 1798 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) [2020-12-18 00:03:26,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:26,330 INFO L93 Difference]: Finished difference Result 1145 states and 2711 transitions. [2020-12-18 00:03:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-18 00:03:26,331 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 [2020-12-18 00:03:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:26,332 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:03:26,332 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 2711 transitions. Word has length 45 [2020-12-18 00:03:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:26,333 INFO L481 AbstractCegarLoop]: Abstraction has 1145 states and 2711 transitions. [2020-12-18 00:03:26,334 INFO L482 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) [2020-12-18 00:03:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 2711 transitions. [2020-12-18 00:03:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-18 00:03:26,337 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:03:26,338 INFO L504 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] [2020-12-18 00:03:26,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-18 00:03:26,338 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:03:26,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:03:26,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1383140064, now seen corresponding path program 2 times [2020-12-18 00:03:26,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:03:26,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408568960] [2020-12-18 00:03:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:03:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:03:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:03:26,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408568960] [2020-12-18 00:03:26,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:03:26,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:03:26,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270606471] [2020-12-18 00:03:26,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:03:26,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:03:26,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:03:26,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:03:26,469 INFO L87 Difference]: Start difference. First operand 1145 states and 2711 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) [2020-12-18 00:03:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:03:26,629 INFO L93 Difference]: Finished difference Result 1501 states and 3540 transitions. [2020-12-18 00:03:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-18 00:03:26,630 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 [2020-12-18 00:03:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:03:26,631 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:03:26,631 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 3540 transitions. Word has length 45 [2020-12-18 00:03:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:03:26,632 INFO L481 AbstractCegarLoop]: Abstraction has 1501 states and 3540 transitions. [2020-12-18 00:03:26,632 INFO L482 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) [2020-12-18 00:03:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 3540 transitions. [2020-12-18 00:03:26,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-18 00:03:26,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-18 00:03:26,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 12:03:26 BasicIcfg [2020-12-18 00:03:26,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-18 00:03:26,645 INFO L168 Benchmark]: Toolchain (without parser) took 3413.39 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 277.3 MB in the beginning and 325.0 MB in the end (delta: -47.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:26,646 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:03:26,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.75 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 246.9 MB in the end (delta: 30.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:26,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 302.0 MB. Free memory was 246.9 MB in the beginning and 245.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:26,649 INFO L168 Benchmark]: Boogie Preprocessor took 28.42 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 243.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:03:26,649 INFO L168 Benchmark]: RCFGBuilder took 495.58 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 264.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-12-18 00:03:26,650 INFO L168 Benchmark]: TraceAbstraction took 2202.05 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 264.7 MB in the beginning and 325.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 578.3 kB. Max. memory is 16.0 GB. [2020-12-18 00:03:26,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 612.75 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 246.9 MB in the end (delta: 30.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 302.0 MB. Free memory was 246.9 MB in the beginning and 245.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.42 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 243.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 495.58 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 264.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2202.05 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 264.7 MB in the beginning and 325.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 578.3 kB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 334 SDtfs, 452 SDslu, 1182 SDs, 0 SdLazy, 132 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1501occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 16640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...