/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 22:57:44,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 22:57:44,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 22:57:44,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 22:57:44,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 22:57:44,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 22:57:44,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 22:57:44,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 22:57:44,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 22:57:44,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 22:57:44,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 22:57:44,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 22:57:44,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 22:57:44,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 22:57:44,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 22:57:44,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 22:57:44,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 22:57:44,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 22:57:44,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 22:57:44,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 22:57:44,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 22:57:44,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 22:57:44,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 22:57:44,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 22:57:44,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 22:57:44,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 22:57:44,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 22:57:44,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 22:57:44,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 22:57:44,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-23 22:57:44,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 22:57:44,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 22:57:44,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 22:57:44,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 22:57:44,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 22:57:44,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 22:57:44,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 22:57:44,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 22:57:44,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 22:57:44,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 22:57:44,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 22:57:44,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 22:57:44,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 22:57:44,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 22:57:44,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 22:57:44,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 22:57:44,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 22:57:44,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 22:57:44,393 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 22:57:44,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 22:57:44,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 22:57:44,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 22:57:44,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 22:57:44,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 22:57:44,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 22:57:44,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 22:57:44,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 22:57:44,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 22:57:44,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 22:57:44,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 22:57:44,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 22:57:44,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:57:44,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 22:57:44,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 22:57:44,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 22:57:44,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 22:57:44,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 22:57:44,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 22:57:44,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 22:57:44,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 22:57:44,397 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 22:57:44,397 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 22:57:44,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 22:57:44,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 22:57:44,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 22:57:44,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 22:57:44,559 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 22:57:44,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound100.c [2022-02-23 22:57:44,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9c2782d/1a415ef6b308458ca2972945a11c8e57/FLAG244a7f01a [2022-02-23 22:57:44,904 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 22:57:44,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound100.c [2022-02-23 22:57:44,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9c2782d/1a415ef6b308458ca2972945a11c8e57/FLAG244a7f01a [2022-02-23 22:57:45,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9c2782d/1a415ef6b308458ca2972945a11c8e57 [2022-02-23 22:57:45,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 22:57:45,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 22:57:45,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 22:57:45,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 22:57:45,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 22:57:45,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c7259a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45, skipping insertion in model container [2022-02-23 22:57:45,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 22:57:45,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 22:57:45,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2022-02-23 22:57:45,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:57:45,521 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 22:57:45,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound100.c[709,722] [2022-02-23 22:57:45,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:57:45,557 INFO L208 MainTranslator]: Completed translation [2022-02-23 22:57:45,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45 WrapperNode [2022-02-23 22:57:45,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 22:57:45,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 22:57:45,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 22:57:45,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 22:57:45,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 22:57:45,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 22:57:45,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 22:57:45,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 22:57:45,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:57:45,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:57:45,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 22:57:45,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 22:57:45,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 22:57:45,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 22:57:45,661 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 22:57:45,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 22:57:45,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 22:57:45,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 22:57:45,661 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 22:57:45,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 22:57:45,662 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 22:57:45,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 22:57:45,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 22:57:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 22:57:45,711 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 22:57:45,712 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 22:57:45,863 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 22:57:45,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 22:57:45,867 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 22:57:45,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:45 BoogieIcfgContainer [2022-02-23 22:57:45,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 22:57:45,869 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 22:57:45,869 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 22:57:45,870 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 22:57:45,872 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:45" (1/1) ... [2022-02-23 22:57:45,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:57:45 BasicIcfg [2022-02-23 22:57:45,898 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 22:57:45,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 22:57:45,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 22:57:45,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 22:57:45,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:57:45" (1/4) ... [2022-02-23 22:57:45,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8650568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:45, skipping insertion in model container [2022-02-23 22:57:45,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:45" (2/4) ... [2022-02-23 22:57:45,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8650568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:45, skipping insertion in model container [2022-02-23 22:57:45,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:45" (3/4) ... [2022-02-23 22:57:45,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8650568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:57:45, skipping insertion in model container [2022-02-23 22:57:45,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:57:45" (4/4) ... [2022-02-23 22:57:45,906 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound100.cqvasr [2022-02-23 22:57:45,909 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 22:57:45,911 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 22:57:45,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 22:57:45,958 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 22:57:45,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 22:57:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-23 22:57:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 22:57:45,976 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:57:45,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:57:45,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:57:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:57:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1238828824, now seen corresponding path program 1 times [2022-02-23 22:57:45,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:57:45,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953028291] [2022-02-23 22:57:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:57:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:57:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:57:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 22:57:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:57:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 22:57:46,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:57:46,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953028291] [2022-02-23 22:57:46,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953028291] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:57:46,124 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:57:46,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 22:57:46,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843302717] [2022-02-23 22:57:46,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:57:46,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 22:57:46,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:57:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 22:57:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:57:46,154 INFO L87 Difference]: Start difference. First operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 22:57:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:57:46,226 INFO L93 Difference]: Finished difference Result 47 states and 70 transitions. [2022-02-23 22:57:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 22:57:46,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-02-23 22:57:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:57:46,235 INFO L225 Difference]: With dead ends: 47 [2022-02-23 22:57:46,235 INFO L226 Difference]: Without dead ends: 22 [2022-02-23 22:57:46,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:57:46,241 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:57:46,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:57:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-23 22:57:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-02-23 22:57:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 22:57:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-02-23 22:57:46,274 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 11 [2022-02-23 22:57:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:57:46,275 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-02-23 22:57:46,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 22:57:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-02-23 22:57:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 22:57:46,276 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:57:46,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:57:46,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 22:57:46,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:57:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:57:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash -221581531, now seen corresponding path program 1 times [2022-02-23 22:57:46,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:57:46,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665931936] [2022-02-23 22:57:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:57:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:57:46,308 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:57:46,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291637938] [2022-02-23 22:57:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:57:46,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:57:46,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:57:46,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:57:46,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 22:57:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:57:46,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 22:57:46,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:57:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 22:57:46,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:57:46,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:57:46,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665931936] [2022-02-23 22:57:46,403 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:57:46,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291637938] [2022-02-23 22:57:46,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291637938] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:57:46,403 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:57:46,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 22:57:46,404 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996073399] [2022-02-23 22:57:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:57:46,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 22:57:46,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:57:46,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 22:57:46,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 22:57:46,405 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 22:57:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:57:46,415 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-02-23 22:57:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 22:57:46,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-23 22:57:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:57:46,416 INFO L225 Difference]: With dead ends: 32 [2022-02-23 22:57:46,416 INFO L226 Difference]: Without dead ends: 23 [2022-02-23 22:57:46,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 22:57:46,417 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:57:46,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:57:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-23 22:57:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-23 22:57:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 22:57:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-02-23 22:57:46,422 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2022-02-23 22:57:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:57:46,422 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-02-23 22:57:46,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 22:57:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-02-23 22:57:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 22:57:46,423 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:57:46,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:57:46,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 22:57:46,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:57:46,642 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:57:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:57:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash -220509055, now seen corresponding path program 1 times [2022-02-23 22:57:46,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:57:46,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518332607] [2022-02-23 22:57:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:57:46,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:57:46,654 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:57:46,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024996221] [2022-02-23 22:57:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:57:46,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:57:46,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:57:46,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:57:46,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 22:57:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 22:57:46,701 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-23 22:57:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 22:57:46,718 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-23 22:57:46,718 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-23 22:57:46,719 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 22:57:46,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 22:57:46,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-23 22:57:46,930 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-23 22:57:46,932 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 22:57:46,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:57:46 BasicIcfg [2022-02-23 22:57:46,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 22:57:46,945 INFO L158 Benchmark]: Toolchain (without parser) took 1618.76ms. Allocated memory was 203.4MB in the beginning and 316.7MB in the end (delta: 113.2MB). Free memory was 147.5MB in the beginning and 230.1MB in the end (delta: -82.6MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. [2022-02-23 22:57:46,945 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 203.4MB. Free memory is still 163.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:57:46,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.62ms. Allocated memory was 203.4MB in the beginning and 316.7MB in the end (delta: 113.2MB). Free memory was 147.3MB in the beginning and 288.3MB in the end (delta: -141.1MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. [2022-02-23 22:57:46,946 INFO L158 Benchmark]: Boogie Preprocessor took 37.65ms. Allocated memory is still 316.7MB. Free memory was 288.3MB in the beginning and 286.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 22:57:46,946 INFO L158 Benchmark]: RCFGBuilder took 271.42ms. Allocated memory is still 316.7MB. Free memory was 286.5MB in the beginning and 274.7MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-23 22:57:46,946 INFO L158 Benchmark]: IcfgTransformer took 29.11ms. Allocated memory is still 316.7MB. Free memory was 274.7MB in the beginning and 273.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:57:46,947 INFO L158 Benchmark]: TraceAbstraction took 1045.58ms. Allocated memory is still 316.7MB. Free memory was 273.1MB in the beginning and 230.1MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2022-02-23 22:57:46,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 203.4MB. Free memory is still 163.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.62ms. Allocated memory was 203.4MB in the beginning and 316.7MB in the end (delta: 113.2MB). Free memory was 147.3MB in the beginning and 288.3MB in the end (delta: -141.1MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.65ms. Allocated memory is still 316.7MB. Free memory was 288.3MB in the beginning and 286.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 271.42ms. Allocated memory is still 316.7MB. Free memory was 286.5MB in the beginning and 274.7MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 29.11ms. Allocated memory is still 316.7MB. Free memory was 274.7MB in the beginning and 273.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1045.58ms. Allocated memory is still 316.7MB. Free memory was 273.1MB in the beginning and 230.1MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [\old(counter)=6, counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [\old(counter)=0, a=2, counter=0, r=1, s=13/4, x=2] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, counter=1, counter++=0, r=1, s=13/4, x=2] [L33] COND TRUE counter++<100 [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0, \old(counter)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 56 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 1 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces [2022-02-23 22:57:46,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...