/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:21:46,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:21:46,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:21:46,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 09:21:46,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 09:21:46,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 09:21:46,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 09:21:46,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 09:21:46,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 09:21:46,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 09:21:46,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 09:21:46,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 09:21:46,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:21:46,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:21:46,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:21:46,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:21:46,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:21:46,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:21:46,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:21:46,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:21:46,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:21:46,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:21:46,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:21:46,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:21:46,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:21:46,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:21:46,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:21:46,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:21:46,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:21:46,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 09:21:46,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:21:46,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:21:46,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:21:46,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:21:46,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:21:46,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:21:46,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:21:46,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:21:46,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:21:46,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:21:46,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:21:46,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:21:46,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:21:46,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:21:46,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:21:46,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:21:46,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:21:46,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:21:46,414 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:21:46,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:21:46,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:21:46,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:21:46,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:21:46,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:21:46,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:21:46,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:21:46,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:21:46,416 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:21:46,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:21:46,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:21:46,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:21:46,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:21:46,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:21:46,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:21:46,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:21:46,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:21:46,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:21:46,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:21:46,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:21:46,418 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:21:46,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:21:46,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:21:46,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:21:46,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:21:46,419 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:21:46,419 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:21:46,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:21:46,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:21:46,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:21:46,612 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:21:46,613 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:21:46,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound20.c [2022-01-10 09:21:46,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4534eb3a9/c3caf7fcdba34774b6251361d780eae2/FLAG309744399 [2022-01-10 09:21:46,999 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:21:47,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound20.c [2022-01-10 09:21:47,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4534eb3a9/c3caf7fcdba34774b6251361d780eae2/FLAG309744399 [2022-01-10 09:21:47,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4534eb3a9/c3caf7fcdba34774b6251361d780eae2 [2022-01-10 09:21:47,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:21:47,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:21:47,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:21:47,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:21:47,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:21:47,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cab427c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47, skipping insertion in model container [2022-01-10 09:21:47,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:21:47,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:21:47,630 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/ps6-ll_unwindbound20.c[458,471] [2022-01-10 09:21:47,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:21:47,682 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:21:47,694 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/ps6-ll_unwindbound20.c[458,471] [2022-01-10 09:21:47,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:21:47,727 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:21:47,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47 WrapperNode [2022-01-10 09:21:47,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:21:47,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:21:47,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:21:47,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:21:47,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,770 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 57 [2022-01-10 09:21:47,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:21:47,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:21:47,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:21:47,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:21:47,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:21:47,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:21:47,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:21:47,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:21:47,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (1/1) ... [2022-01-10 09:21:47,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:21:47,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:21:47,840 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) [2022-01-10 09:21:47,859 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 [2022-01-10 09:21:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:21:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:21:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:21:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:21:47,940 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:21:47,942 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:21:48,924 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:21:48,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:21:48,929 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 09:21:48,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:21:48 BoogieIcfgContainer [2022-01-10 09:21:48,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:21:48,941 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:21:48,941 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:21:48,942 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:21:48,948 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:21:48" (1/1) ... [2022-01-10 09:21:49,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:21:49 BasicIcfg [2022-01-10 09:21:49,051 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:21:49,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:21:49,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:21:49,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:21:49,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:21:47" (1/4) ... [2022-01-10 09:21:49,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a45d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:21:49, skipping insertion in model container [2022-01-10 09:21:49,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:21:47" (2/4) ... [2022-01-10 09:21:49,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a45d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:21:49, skipping insertion in model container [2022-01-10 09:21:49,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:21:48" (3/4) ... [2022-01-10 09:21:49,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a45d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:21:49, skipping insertion in model container [2022-01-10 09:21:49,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:21:49" (4/4) ... [2022-01-10 09:21:49,058 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound20.cTransformedIcfg [2022-01-10 09:21:49,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:21:49,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 09:21:49,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:21:49,114 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=PETRI_NET, 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 [2022-01-10 09:21:49,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 09:21:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 22 states have internal predecessors, (29), 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) [2022-01-10 09:21:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 09:21:49,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:21:49,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:21:49,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:21:49,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:21:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash 235801450, now seen corresponding path program 1 times [2022-01-10 09:21:49,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:21:49,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227963240] [2022-01-10 09:21:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:49,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:21:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:21:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:21:49,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:21:49,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227963240] [2022-01-10 09:21:49,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227963240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:21:49,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:21:49,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:21:49,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943994608] [2022-01-10 09:21:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:21:49,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:21:49,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:21:49,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:21:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:21:49,339 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 22 states have internal predecessors, (29), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-01-10 09:21:49,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:21:49,352 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-01-10 09:21:49,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:21:49,354 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-01-10 09:21:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:21:49,360 INFO L225 Difference]: With dead ends: 43 [2022-01-10 09:21:49,360 INFO L226 Difference]: Without dead ends: 19 [2022-01-10 09:21:49,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:21:49,366 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:21:49,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:21:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-10 09:21:49,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-10 09:21:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 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) [2022-01-10 09:21:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-01-10 09:21:49,394 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 8 [2022-01-10 09:21:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:21:49,395 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-01-10 09:21:49,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-01-10 09:21:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-01-10 09:21:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 09:21:49,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:21:49,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:21:49,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:21:49,398 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:21:49,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:21:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash 264462379, now seen corresponding path program 1 times [2022-01-10 09:21:49,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:21:49,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827668552] [2022-01-10 09:21:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:49,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:21:49,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:21:49,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235982395] [2022-01-10 09:21:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:49,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:21:49,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:21:49,456 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) [2022-01-10 09:21:49,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 09:21:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:21:49,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:21:49,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:21:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:21:49,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:21:49,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:21:49,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827668552] [2022-01-10 09:21:49,705 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:21:49,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235982395] [2022-01-10 09:21:49,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235982395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:21:49,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:21:49,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:21:49,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350884389] [2022-01-10 09:21:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:21:49,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:21:49,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:21:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:21:49,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:21:49,708 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-01-10 09:21:51,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:21:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:21:52,053 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-01-10 09:21:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:21:52,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-01-10 09:21:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:21:52,055 INFO L225 Difference]: With dead ends: 35 [2022-01-10 09:21:52,055 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 09:21:52,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:21:52,056 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:21:52,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 40 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 09:21:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 09:21:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 09:21:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-01-10 09:21:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-01-10 09:21:52,061 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 8 [2022-01-10 09:21:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:21:52,061 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-01-10 09:21:52,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-01-10 09:21:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-01-10 09:21:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 09:21:52,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:21:52,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:21:52,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 09:21:52,266 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 [2022-01-10 09:21:52,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:21:52,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:21:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1442682540, now seen corresponding path program 1 times [2022-01-10 09:21:52,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:21:52,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049502567] [2022-01-10 09:21:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:52,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:21:52,292 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:21:52,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730263584] [2022-01-10 09:21:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:52,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:21:52,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:21:52,297 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) [2022-01-10 09:21:52,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 09:21:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:21:52,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 09:21:52,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:21:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:21:52,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:21:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:21:54,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:21:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049502567] [2022-01-10 09:21:54,081 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:21:54,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730263584] [2022-01-10 09:21:54,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730263584] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:21:54,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:21:54,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2022-01-10 09:21:54,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403863109] [2022-01-10 09:21:54,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:21:54,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 09:21:54,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:21:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 09:21:54,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 09:21:54,084 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-01-10 09:21:55,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:21:55,066 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-01-10 09:21:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:21:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 13 [2022-01-10 09:21:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:21:55,067 INFO L225 Difference]: With dead ends: 35 [2022-01-10 09:21:55,067 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 09:21:55,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:21:55,069 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:21:55,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 09:21:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 09:21:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2022-01-10 09:21:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-01-10 09:21:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-01-10 09:21:55,075 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2022-01-10 09:21:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:21:55,076 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-01-10 09:21:55,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-01-10 09:21:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-01-10 09:21:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 09:21:55,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:21:55,077 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:21:55,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 09:21:55,284 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 [2022-01-10 09:21:55,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:21:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:21:55,285 INFO L85 PathProgramCache]: Analyzing trace with hash 748836995, now seen corresponding path program 1 times [2022-01-10 09:21:55,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:21:55,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116205103] [2022-01-10 09:21:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:55,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:21:55,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:21:55,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207381568] [2022-01-10 09:21:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:55,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:21:55,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:21:55,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:21:55,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 09:21:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:21:55,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 09:21:55,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:21:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:21:55,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:21:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:21:56,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:21:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116205103] [2022-01-10 09:21:56,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:21:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207381568] [2022-01-10 09:21:56,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207381568] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:21:56,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:21:56,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 09:21:56,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089533185] [2022-01-10 09:21:56,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:21:56,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 09:21:56,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:21:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 09:21:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:21:56,163 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-01-10 09:21:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:21:56,554 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2022-01-10 09:21:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 09:21:56,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 16 [2022-01-10 09:21:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:21:56,556 INFO L225 Difference]: With dead ends: 50 [2022-01-10 09:21:56,556 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 09:21:56,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 09:21:56,557 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:21:56,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 09:21:56,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 09:21:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2022-01-10 09:21:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 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) [2022-01-10 09:21:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-01-10 09:21:56,567 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16 [2022-01-10 09:21:56,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:21:56,568 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-01-10 09:21:56,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-01-10 09:21:56,568 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-01-10 09:21:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 09:21:56,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:21:56,569 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:21:56,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 09:21:56,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:21:56,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:21:56,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:21:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash -728187153, now seen corresponding path program 1 times [2022-01-10 09:21:56,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:21:56,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454355160] [2022-01-10 09:21:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:56,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:21:56,791 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:21:56,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135696875] [2022-01-10 09:21:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:21:56,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:21:56,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:21:56,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:21:56,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:21:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:21:57,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 09:21:57,291 INFO L286 TraceCheckSpWp]: Computing forward predicates...