/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:19:32,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:19:32,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:19:32,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:19:32,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:19:32,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:19:32,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:19:32,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:19:32,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:19:32,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:19:32,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:19:32,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:19:32,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:19:32,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:19:32,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:19:32,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:19:32,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:19:32,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:19:32,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:19:32,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:19:32,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:19:32,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:19:32,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:19:32,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:19:32,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:19:32,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:19:32,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:19:32,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:19:32,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 08:19:32,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:19:32,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:19:32,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:19:32,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:19:32,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:19:32,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:19:32,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:19:32,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:19:32,583 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:19:32,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:19:32,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:19:32,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:19:32,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:19:32,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:19:32,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:19:32,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:19:32,584 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:19:32,584 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:19:32,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:19:32,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:19:32,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:19:32,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:19:32,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:19:32,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:19:32,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:19:32,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:19:32,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:19:32,586 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:19:32,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:19:32,587 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:19:32,587 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:19:32,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:19:32,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:19:32,590 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:19:32,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:19:32,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:19:32,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:19:32,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:19:32,846 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:19:32,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-01-10 08:19:32,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e35e397/a1cec32a660a4f36950c303243a7221c/FLAG8dcfc5876 [2022-01-10 08:19:33,326 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:19:33,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-01-10 08:19:33,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e35e397/a1cec32a660a4f36950c303243a7221c/FLAG8dcfc5876 [2022-01-10 08:19:33,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e35e397/a1cec32a660a4f36950c303243a7221c [2022-01-10 08:19:33,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:19:33,356 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:19:33,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:19:33,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:19:33,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:19:33,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:33,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19cead68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33, skipping insertion in model container [2022-01-10 08:19:33,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:33,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:19:33,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:19:33,705 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[913,926] [2022-01-10 08:19:33,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[5977,5990] [2022-01-10 08:19:33,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:19:33,805 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:19:33,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[913,926] [2022-01-10 08:19:33,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[5977,5990] [2022-01-10 08:19:33,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:19:33,878 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:19:33,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33 WrapperNode [2022-01-10 08:19:33,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:19:33,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:19:33,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:19:33,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:19:33,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:33,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:33,972 INFO L137 Inliner]: procedures = 73, calls = 85, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1018 [2022-01-10 08:19:33,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:19:33,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:19:33,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:19:33,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:19:33,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:33,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:33,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:33,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:34,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:34,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:34,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:34,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:19:34,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:19:34,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:19:34,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:19:34,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (1/1) ... [2022-01-10 08:19:34,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:19:34,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:19:34,093 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 08:19:34,117 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 08:19:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:19:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:19:34,131 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:19:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-01-10 08:19:34,131 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-01-10 08:19:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:19:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:19:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:19:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:19:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:19:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:19:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:19:34,132 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:19:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:19:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:19:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:19:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:19:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:19:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:19:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:19:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:19:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:19:34,133 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 08:19:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 08:19:34,292 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:19:34,294 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:19:35,163 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:19:35,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:19:35,176 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-01-10 08:19:35,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:19:35 BoogieIcfgContainer [2022-01-10 08:19:35,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:19:35,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:19:35,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:19:35,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:19:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:19:33" (1/3) ... [2022-01-10 08:19:35,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8be369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:19:35, skipping insertion in model container [2022-01-10 08:19:35,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:19:33" (2/3) ... [2022-01-10 08:19:35,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8be369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:19:35, skipping insertion in model container [2022-01-10 08:19:35,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:19:35" (3/3) ... [2022-01-10 08:19:35,186 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-01-10 08:19:35,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:19:35,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:19:35,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:19:35,244 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 08:19:35,244 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:19:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 415 states have (on average 1.653012048192771) internal successors, (686), 422 states have internal predecessors, (686), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 08:19:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 08:19:35,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:35,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:35,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1035123780, now seen corresponding path program 1 times [2022-01-10 08:19:35,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:35,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964187439] [2022-01-10 08:19:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:35,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:35,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:35,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:35,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 08:19:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:35,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:35,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:35,534 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 08:19:35,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:35,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:35,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964187439] [2022-01-10 08:19:35,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964187439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:35,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:35,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:35,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486932401] [2022-01-10 08:19:35,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:35,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:35,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:35,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:35,564 INFO L87 Difference]: Start difference. First operand has 462 states, 415 states have (on average 1.653012048192771) internal successors, (686), 422 states have internal predecessors, (686), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:19:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:35,670 INFO L93 Difference]: Finished difference Result 957 states and 1560 transitions. [2022-01-10 08:19:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:35,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-01-10 08:19:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:35,690 INFO L225 Difference]: With dead ends: 957 [2022-01-10 08:19:35,690 INFO L226 Difference]: Without dead ends: 510 [2022-01-10 08:19:35,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:35,699 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 690 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:35,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 810 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-01-10 08:19:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 506. [2022-01-10 08:19:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 456 states have (on average 1.5394736842105263) internal successors, (702), 460 states have internal predecessors, (702), 38 states have call successors, (38), 12 states have call predecessors, (38), 10 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2022-01-10 08:19:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 778 transitions. [2022-01-10 08:19:35,773 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 778 transitions. Word has length 44 [2022-01-10 08:19:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:35,773 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 778 transitions. [2022-01-10 08:19:35,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:19:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 778 transitions. [2022-01-10 08:19:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 08:19:35,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:35,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:35,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:35,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:35,987 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1381906941, now seen corresponding path program 1 times [2022-01-10 08:19:35,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:35,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654170933] [2022-01-10 08:19:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:35,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:35,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:35,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 08:19:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:36,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:36,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:36,206 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 08:19:36,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:36,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654170933] [2022-01-10 08:19:36,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654170933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:36,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:36,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:36,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031290494] [2022-01-10 08:19:36,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:36,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:36,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:36,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:36,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:36,222 INFO L87 Difference]: Start difference. First operand 506 states and 778 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:19:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:36,267 INFO L93 Difference]: Finished difference Result 714 states and 1066 transitions. [2022-01-10 08:19:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-01-10 08:19:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:36,272 INFO L225 Difference]: With dead ends: 714 [2022-01-10 08:19:36,272 INFO L226 Difference]: Without dead ends: 599 [2022-01-10 08:19:36,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:36,274 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 62 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:36,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1402 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-01-10 08:19:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 573. [2022-01-10 08:19:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 517 states have (on average 1.5203094777562862) internal successors, (786), 521 states have internal predecessors, (786), 41 states have call successors, (41), 15 states have call predecessors, (41), 13 states have return successors, (42), 37 states have call predecessors, (42), 37 states have call successors, (42) [2022-01-10 08:19:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 869 transitions. [2022-01-10 08:19:36,301 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 869 transitions. Word has length 45 [2022-01-10 08:19:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:36,301 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 869 transitions. [2022-01-10 08:19:36,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:19:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 869 transitions. [2022-01-10 08:19:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 08:19:36,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:36,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:36,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:36,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:36,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:36,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash 97549480, now seen corresponding path program 1 times [2022-01-10 08:19:36,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:36,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346753601] [2022-01-10 08:19:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:36,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:36,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:36,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 08:19:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:36,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:36,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:36,775 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 08:19:36,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:36,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:36,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346753601] [2022-01-10 08:19:36,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346753601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:36,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:36,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:36,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350548949] [2022-01-10 08:19:36,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:36,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:36,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:36,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:36,782 INFO L87 Difference]: Start difference. First operand 573 states and 869 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:19:36,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:36,859 INFO L93 Difference]: Finished difference Result 926 states and 1357 transitions. [2022-01-10 08:19:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:36,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-01-10 08:19:36,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:36,863 INFO L225 Difference]: With dead ends: 926 [2022-01-10 08:19:36,863 INFO L226 Difference]: Without dead ends: 744 [2022-01-10 08:19:36,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:36,865 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 670 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:36,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 790 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:19:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-01-10 08:19:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 730. [2022-01-10 08:19:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 656 states have (on average 1.475609756097561) internal successors, (968), 662 states have internal predecessors, (968), 52 states have call successors, (52), 22 states have call predecessors, (52), 20 states have return successors, (58), 46 states have call predecessors, (58), 48 states have call successors, (58) [2022-01-10 08:19:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1078 transitions. [2022-01-10 08:19:36,893 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1078 transitions. Word has length 45 [2022-01-10 08:19:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:36,893 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1078 transitions. [2022-01-10 08:19:36,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 08:19:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1078 transitions. [2022-01-10 08:19:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 08:19:36,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:36,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:36,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:37,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:37,105 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash -438152140, now seen corresponding path program 1 times [2022-01-10 08:19:37,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:37,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694037607] [2022-01-10 08:19:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:37,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:37,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:37,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 08:19:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:37,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:37,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:19:37,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:37,307 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:37,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694037607] [2022-01-10 08:19:37,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694037607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:37,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:37,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:37,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040384886] [2022-01-10 08:19:37,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:37,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:37,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:37,309 INFO L87 Difference]: Start difference. First operand 730 states and 1078 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:19:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:37,348 INFO L93 Difference]: Finished difference Result 1242 states and 1775 transitions. [2022-01-10 08:19:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-01-10 08:19:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:37,351 INFO L225 Difference]: With dead ends: 1242 [2022-01-10 08:19:37,352 INFO L226 Difference]: Without dead ends: 903 [2022-01-10 08:19:37,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:37,353 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 50 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:37,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-01-10 08:19:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 903. [2022-01-10 08:19:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 807 states have (on average 1.4237918215613383) internal successors, (1149), 813 states have internal predecessors, (1149), 66 states have call successors, (66), 30 states have call predecessors, (66), 28 states have return successors, (80), 60 states have call predecessors, (80), 62 states have call successors, (80) [2022-01-10 08:19:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1295 transitions. [2022-01-10 08:19:37,377 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1295 transitions. Word has length 62 [2022-01-10 08:19:37,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:37,377 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1295 transitions. [2022-01-10 08:19:37,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:19:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1295 transitions. [2022-01-10 08:19:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 08:19:37,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:37,379 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:37,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:37,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:37,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:37,586 INFO L85 PathProgramCache]: Analyzing trace with hash -865322860, now seen corresponding path program 1 times [2022-01-10 08:19:37,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:37,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056532699] [2022-01-10 08:19:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:37,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:37,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:37,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:37,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 08:19:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:37,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 08:19:37,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:37,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:37,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056532699] [2022-01-10 08:19:37,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056532699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:37,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:37,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:37,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766879966] [2022-01-10 08:19:37,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:37,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:37,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:37,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:37,771 INFO L87 Difference]: Start difference. First operand 903 states and 1295 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:19:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:37,803 INFO L93 Difference]: Finished difference Result 1450 states and 2016 transitions. [2022-01-10 08:19:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:37,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-01-10 08:19:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:37,806 INFO L225 Difference]: With dead ends: 1450 [2022-01-10 08:19:37,806 INFO L226 Difference]: Without dead ends: 1030 [2022-01-10 08:19:37,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:37,808 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 657 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:37,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [657 Valid, 785 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-01-10 08:19:37,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2022-01-10 08:19:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 920 states have (on average 1.392391304347826) internal successors, (1281), 926 states have internal predecessors, (1281), 74 states have call successors, (74), 36 states have call predecessors, (74), 34 states have return successors, (92), 68 states have call predecessors, (92), 70 states have call successors, (92) [2022-01-10 08:19:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1447 transitions. [2022-01-10 08:19:37,831 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1447 transitions. Word has length 67 [2022-01-10 08:19:37,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:37,831 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 1447 transitions. [2022-01-10 08:19:37,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:19:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1447 transitions. [2022-01-10 08:19:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 08:19:37,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:37,833 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:37,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:38,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:38,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash 679042809, now seen corresponding path program 1 times [2022-01-10 08:19:38,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:38,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599438081] [2022-01-10 08:19:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:38,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:38,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:38,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 08:19:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:38,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:38,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:19:38,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:38,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:38,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599438081] [2022-01-10 08:19:38,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599438081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:38,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:38,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:19:38,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105804276] [2022-01-10 08:19:38,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:38,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:38,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:38,246 INFO L87 Difference]: Start difference. First operand 1030 states and 1447 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:19:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:38,304 INFO L93 Difference]: Finished difference Result 1667 states and 2292 transitions. [2022-01-10 08:19:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:19:38,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-01-10 08:19:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:38,308 INFO L225 Difference]: With dead ends: 1667 [2022-01-10 08:19:38,308 INFO L226 Difference]: Without dead ends: 1173 [2022-01-10 08:19:38,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:19:38,310 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 50 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:38,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 2815 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-01-10 08:19:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1071. [2022-01-10 08:19:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 959 states have (on average 1.3764337851929094) internal successors, (1320), 967 states have internal predecessors, (1320), 74 states have call successors, (74), 36 states have call predecessors, (74), 36 states have return successors, (94), 68 states have call predecessors, (94), 70 states have call successors, (94) [2022-01-10 08:19:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1488 transitions. [2022-01-10 08:19:38,374 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1488 transitions. Word has length 68 [2022-01-10 08:19:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:38,374 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1488 transitions. [2022-01-10 08:19:38,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:19:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1488 transitions. [2022-01-10 08:19:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 08:19:38,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:38,375 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:38,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:38,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:38,582 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash -350316489, now seen corresponding path program 1 times [2022-01-10 08:19:38,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:38,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045422057] [2022-01-10 08:19:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:38,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:38,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:38,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:38,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 08:19:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:38,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:38,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:19:38,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:38,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:38,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045422057] [2022-01-10 08:19:38,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045422057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:38,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:38,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:19:38,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582461481] [2022-01-10 08:19:38,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:38,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:38,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:38,744 INFO L87 Difference]: Start difference. First operand 1071 states and 1488 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:19:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:38,784 INFO L93 Difference]: Finished difference Result 1564 states and 2134 transitions. [2022-01-10 08:19:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:19:38,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-01-10 08:19:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:38,788 INFO L225 Difference]: With dead ends: 1564 [2022-01-10 08:19:38,788 INFO L226 Difference]: Without dead ends: 982 [2022-01-10 08:19:38,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:19:38,789 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 10 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:38,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2787 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-01-10 08:19:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 962. [2022-01-10 08:19:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 864 states have (on average 1.3831018518518519) internal successors, (1195), 874 states have internal predecessors, (1195), 64 states have call successors, (64), 30 states have call predecessors, (64), 32 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2022-01-10 08:19:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1339 transitions. [2022-01-10 08:19:38,812 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1339 transitions. Word has length 68 [2022-01-10 08:19:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:38,813 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 1339 transitions. [2022-01-10 08:19:38,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-10 08:19:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1339 transitions. [2022-01-10 08:19:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 08:19:38,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:38,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:38,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:39,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:39,022 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1699450487, now seen corresponding path program 1 times [2022-01-10 08:19:39,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:39,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156400954] [2022-01-10 08:19:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:39,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:39,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:39,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:39,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 08:19:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:39,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:39,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:19:39,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:19:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:19:39,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156400954] [2022-01-10 08:19:39,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156400954] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 08:19:39,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 08:19:39,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-01-10 08:19:39,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516474584] [2022-01-10 08:19:39,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:39,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:19:39,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:19:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:19:39,346 INFO L87 Difference]: Start difference. First operand 962 states and 1339 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:19:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:39,476 INFO L93 Difference]: Finished difference Result 1017 states and 1406 transitions. [2022-01-10 08:19:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-01-10 08:19:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:39,480 INFO L225 Difference]: With dead ends: 1017 [2022-01-10 08:19:39,480 INFO L226 Difference]: Without dead ends: 1014 [2022-01-10 08:19:39,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:39,481 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1278 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:39,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 790 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:19:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-01-10 08:19:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 961. [2022-01-10 08:19:39,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 864 states have (on average 1.380787037037037) internal successors, (1193), 873 states have internal predecessors, (1193), 63 states have call successors, (63), 30 states have call predecessors, (63), 32 states have return successors, (80), 58 states have call predecessors, (80), 60 states have call successors, (80) [2022-01-10 08:19:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1336 transitions. [2022-01-10 08:19:39,502 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1336 transitions. Word has length 68 [2022-01-10 08:19:39,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:39,502 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1336 transitions. [2022-01-10 08:19:39,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 08:19:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1336 transitions. [2022-01-10 08:19:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 08:19:39,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:39,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:39,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:39,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:39,710 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:39,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1141936633, now seen corresponding path program 1 times [2022-01-10 08:19:39,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:39,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028287951] [2022-01-10 08:19:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:39,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:39,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:39,714 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:39,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 08:19:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:39,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:19:39,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:19:40,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:19:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:19:40,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:40,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028287951] [2022-01-10 08:19:40,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028287951] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:19:40,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:19:40,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2022-01-10 08:19:40,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774701643] [2022-01-10 08:19:40,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:19:40,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:19:40,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:40,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:19:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:19:40,202 INFO L87 Difference]: Start difference. First operand 961 states and 1336 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-10 08:19:40,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:40,448 INFO L93 Difference]: Finished difference Result 1784 states and 2378 transitions. [2022-01-10 08:19:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:19:40,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2022-01-10 08:19:40,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:40,455 INFO L225 Difference]: With dead ends: 1784 [2022-01-10 08:19:40,455 INFO L226 Difference]: Without dead ends: 1781 [2022-01-10 08:19:40,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:19:40,456 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 904 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:40,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 2466 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-10 08:19:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1310. [2022-01-10 08:19:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1177 states have (on average 1.346644010195412) internal successors, (1585), 1192 states have internal predecessors, (1585), 82 states have call successors, (82), 43 states have call predecessors, (82), 49 states have return successors, (111), 75 states have call predecessors, (111), 79 states have call successors, (111) [2022-01-10 08:19:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1778 transitions. [2022-01-10 08:19:40,513 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1778 transitions. Word has length 69 [2022-01-10 08:19:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:40,514 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 1778 transitions. [2022-01-10 08:19:40,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 6 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-10 08:19:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1778 transitions. [2022-01-10 08:19:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 08:19:40,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:40,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:40,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:40,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:40,727 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:40,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:40,727 INFO L85 PathProgramCache]: Analyzing trace with hash -54973816, now seen corresponding path program 2 times [2022-01-10 08:19:40,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:40,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707147005] [2022-01-10 08:19:40,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:19:40,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:40,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:40,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:40,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 08:19:40,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:19:40,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:19:40,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:40,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:19:40,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:40,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:40,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707147005] [2022-01-10 08:19:40,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707147005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:40,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:40,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:40,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282743846] [2022-01-10 08:19:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:40,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:40,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:40,959 INFO L87 Difference]: Start difference. First operand 1310 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 08:19:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:41,000 INFO L93 Difference]: Finished difference Result 1951 states and 2595 transitions. [2022-01-10 08:19:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:41,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-01-10 08:19:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:41,004 INFO L225 Difference]: With dead ends: 1951 [2022-01-10 08:19:41,005 INFO L226 Difference]: Without dead ends: 1200 [2022-01-10 08:19:41,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:41,006 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 660 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:41,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 804 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:41,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2022-01-10 08:19:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1188. [2022-01-10 08:19:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1068 states have (on average 1.351123595505618) internal successors, (1443), 1083 states have internal predecessors, (1443), 75 states have call successors, (75), 38 states have call predecessors, (75), 43 states have return successors, (100), 67 states have call predecessors, (100), 72 states have call successors, (100) [2022-01-10 08:19:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1618 transitions. [2022-01-10 08:19:41,038 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1618 transitions. Word has length 88 [2022-01-10 08:19:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:41,038 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1618 transitions. [2022-01-10 08:19:41,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 08:19:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1618 transitions. [2022-01-10 08:19:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 08:19:41,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:41,040 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:41,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:41,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:41,247 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1959938807, now seen corresponding path program 1 times [2022-01-10 08:19:41,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:41,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910461165] [2022-01-10 08:19:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:41,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:41,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:41,249 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:41,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 08:19:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:41,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:41,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 08:19:41,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:41,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:41,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910461165] [2022-01-10 08:19:41,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910461165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:41,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:41,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:41,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164346171] [2022-01-10 08:19:41,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:41,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:19:41,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:41,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:19:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:19:41,520 INFO L87 Difference]: Start difference. First operand 1188 states and 1618 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:41,736 INFO L93 Difference]: Finished difference Result 2018 states and 2665 transitions. [2022-01-10 08:19:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:19:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 103 [2022-01-10 08:19:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:41,741 INFO L225 Difference]: With dead ends: 2018 [2022-01-10 08:19:41,741 INFO L226 Difference]: Without dead ends: 1221 [2022-01-10 08:19:41,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:41,743 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 922 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:41,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 1087 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-01-10 08:19:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1188. [2022-01-10 08:19:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1068 states have (on average 1.3370786516853932) internal successors, (1428), 1083 states have internal predecessors, (1428), 75 states have call successors, (75), 38 states have call predecessors, (75), 43 states have return successors, (99), 67 states have call predecessors, (99), 72 states have call successors, (99) [2022-01-10 08:19:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1602 transitions. [2022-01-10 08:19:41,782 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1602 transitions. Word has length 103 [2022-01-10 08:19:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:41,782 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1602 transitions. [2022-01-10 08:19:41,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1602 transitions. [2022-01-10 08:19:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 08:19:41,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:41,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:41,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 08:19:41,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:41,994 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1974895679, now seen corresponding path program 1 times [2022-01-10 08:19:41,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:41,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429792033] [2022-01-10 08:19:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:41,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:41,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:42,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:42,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 08:19:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:42,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:42,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 08:19:42,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:42,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:42,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429792033] [2022-01-10 08:19:42,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429792033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:42,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:42,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:42,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031750758] [2022-01-10 08:19:42,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:42,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:42,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:42,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:42,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:42,233 INFO L87 Difference]: Start difference. First operand 1188 states and 1602 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 08:19:42,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:42,267 INFO L93 Difference]: Finished difference Result 1512 states and 1994 transitions. [2022-01-10 08:19:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:42,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 104 [2022-01-10 08:19:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:42,269 INFO L225 Difference]: With dead ends: 1512 [2022-01-10 08:19:42,269 INFO L226 Difference]: Without dead ends: 385 [2022-01-10 08:19:42,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:42,271 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 55 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:42,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1417 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:42,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-10 08:19:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-01-10 08:19:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.582857142857143) internal successors, (554), 352 states have internal predecessors, (554), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 08:19:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 608 transitions. [2022-01-10 08:19:42,280 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 608 transitions. Word has length 104 [2022-01-10 08:19:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:42,280 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 608 transitions. [2022-01-10 08:19:42,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-10 08:19:42,280 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 608 transitions. [2022-01-10 08:19:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:42,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:42,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:42,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:42,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:42,489 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1921252372, now seen corresponding path program 1 times [2022-01-10 08:19:42,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:42,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969401981] [2022-01-10 08:19:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:42,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:42,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:42,504 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:42,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 08:19:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:42,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:42,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:42,872 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 08:19:42,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:42,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:42,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969401981] [2022-01-10 08:19:42,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969401981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:42,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:42,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:42,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761713355] [2022-01-10 08:19:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:42,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:42,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:42,874 INFO L87 Difference]: Start difference. First operand 385 states and 608 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:42,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:42,889 INFO L93 Difference]: Finished difference Result 763 states and 1207 transitions. [2022-01-10 08:19:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:42,891 INFO L225 Difference]: With dead ends: 763 [2022-01-10 08:19:42,891 INFO L226 Difference]: Without dead ends: 385 [2022-01-10 08:19:42,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:42,892 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 599 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:42,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 607 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-10 08:19:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-01-10 08:19:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.58) internal successors, (553), 352 states have internal predecessors, (553), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 08:19:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 607 transitions. [2022-01-10 08:19:42,901 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 607 transitions. Word has length 179 [2022-01-10 08:19:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:42,901 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 607 transitions. [2022-01-10 08:19:42,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 607 transitions. [2022-01-10 08:19:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:42,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:42,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:42,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:43,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:43,110 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1272659602, now seen corresponding path program 1 times [2022-01-10 08:19:43,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:43,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598343065] [2022-01-10 08:19:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:43,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:43,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:43,112 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:43,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 08:19:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:43,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:19:43,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:43,469 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 08:19:43,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:43,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:43,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598343065] [2022-01-10 08:19:43,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598343065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:43,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:43,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:19:43,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20118246] [2022-01-10 08:19:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:43,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:19:43,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:19:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:43,471 INFO L87 Difference]: Start difference. First operand 385 states and 607 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:43,487 INFO L93 Difference]: Finished difference Result 755 states and 1190 transitions. [2022-01-10 08:19:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:19:43,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:43,488 INFO L225 Difference]: With dead ends: 755 [2022-01-10 08:19:43,488 INFO L226 Difference]: Without dead ends: 385 [2022-01-10 08:19:43,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:19:43,490 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 590 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:43,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 606 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:19:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-10 08:19:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-01-10 08:19:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.5771428571428572) internal successors, (552), 352 states have internal predecessors, (552), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 08:19:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 606 transitions. [2022-01-10 08:19:43,501 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 606 transitions. Word has length 179 [2022-01-10 08:19:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:43,501 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 606 transitions. [2022-01-10 08:19:43,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 606 transitions. [2022-01-10 08:19:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:43,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:43,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:43,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:43,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:43,720 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash 774102800, now seen corresponding path program 1 times [2022-01-10 08:19:43,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:43,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402835399] [2022-01-10 08:19:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:43,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:43,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:43,727 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:43,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 08:19:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:43,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:43,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:44,247 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 08:19:44,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:44,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402835399] [2022-01-10 08:19:44,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402835399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:44,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:44,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:44,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961912667] [2022-01-10 08:19:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:44,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:44,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:44,249 INFO L87 Difference]: Start difference. First operand 385 states and 606 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:45,096 INFO L93 Difference]: Finished difference Result 1161 states and 1848 transitions. [2022-01-10 08:19:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:19:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:45,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:45,100 INFO L225 Difference]: With dead ends: 1161 [2022-01-10 08:19:45,100 INFO L226 Difference]: Without dead ends: 797 [2022-01-10 08:19:45,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:45,104 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1161 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:45,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 1866 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 08:19:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-10 08:19:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 766. [2022-01-10 08:19:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5903271692745378) internal successors, (1118), 706 states have internal predecessors, (1118), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1215 transitions. [2022-01-10 08:19:45,139 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1215 transitions. Word has length 179 [2022-01-10 08:19:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:45,140 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1215 transitions. [2022-01-10 08:19:45,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1215 transitions. [2022-01-10 08:19:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:45,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:45,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:45,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:45,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:45,353 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash -611636980, now seen corresponding path program 1 times [2022-01-10 08:19:45,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:45,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757454459] [2022-01-10 08:19:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:45,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:45,355 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:45,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 08:19:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:45,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:45,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:45,714 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 08:19:45,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:45,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:45,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757454459] [2022-01-10 08:19:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757454459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:45,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:45,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:45,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109790301] [2022-01-10 08:19:45,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:45,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:45,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:45,716 INFO L87 Difference]: Start difference. First operand 766 states and 1215 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:46,032 INFO L93 Difference]: Finished difference Result 1511 states and 2403 transitions. [2022-01-10 08:19:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:46,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:46,039 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:46,039 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:46,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:46,040 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 821 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:46,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1237 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:19:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5803698435277382) internal successors, (1111), 706 states have internal predecessors, (1111), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1208 transitions. [2022-01-10 08:19:46,061 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1208 transitions. Word has length 179 [2022-01-10 08:19:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:46,061 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1208 transitions. [2022-01-10 08:19:46,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1208 transitions. [2022-01-10 08:19:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:46,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:46,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:46,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:46,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:46,272 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:46,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1487622256, now seen corresponding path program 1 times [2022-01-10 08:19:46,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:46,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983703503] [2022-01-10 08:19:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:46,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:46,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:46,274 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:46,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 08:19:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:46,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:46,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:46,642 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 08:19:46,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:46,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:46,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983703503] [2022-01-10 08:19:46,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983703503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:46,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:46,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:46,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285547680] [2022-01-10 08:19:46,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:46,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:46,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:46,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:46,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:46,644 INFO L87 Difference]: Start difference. First operand 766 states and 1208 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:47,003 INFO L93 Difference]: Finished difference Result 1511 states and 2389 transitions. [2022-01-10 08:19:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:47,007 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:47,007 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:47,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:47,010 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 815 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:47,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 1230 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:19:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.570412517780939) internal successors, (1104), 706 states have internal predecessors, (1104), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1201 transitions. [2022-01-10 08:19:47,042 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1201 transitions. Word has length 179 [2022-01-10 08:19:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:47,042 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1201 transitions. [2022-01-10 08:19:47,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1201 transitions. [2022-01-10 08:19:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:47,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:47,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:47,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 08:19:47,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:47,256 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:47,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash 146688140, now seen corresponding path program 1 times [2022-01-10 08:19:47,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976244103] [2022-01-10 08:19:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:47,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:47,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:47,258 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:47,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 08:19:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:47,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:47,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:47,696 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 08:19:47,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:47,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:47,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976244103] [2022-01-10 08:19:47,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976244103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:47,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:47,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:47,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232981306] [2022-01-10 08:19:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:47,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:47,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:47,697 INFO L87 Difference]: Start difference. First operand 766 states and 1201 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:48,090 INFO L93 Difference]: Finished difference Result 1511 states and 2375 transitions. [2022-01-10 08:19:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:48,094 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:48,094 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:48,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:48,096 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 809 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:48,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 1223 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:19:48,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5604551920341394) internal successors, (1097), 706 states have internal predecessors, (1097), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1194 transitions. [2022-01-10 08:19:48,128 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1194 transitions. Word has length 179 [2022-01-10 08:19:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:48,128 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1194 transitions. [2022-01-10 08:19:48,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1194 transitions. [2022-01-10 08:19:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:48,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:48,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:48,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:48,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:48,342 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2139070480, now seen corresponding path program 1 times [2022-01-10 08:19:48,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:48,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402739972] [2022-01-10 08:19:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:48,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:48,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:48,347 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:48,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 08:19:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:48,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:48,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:48,796 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 08:19:48,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:48,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:48,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402739972] [2022-01-10 08:19:48,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402739972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:48,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:48,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:48,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473843730] [2022-01-10 08:19:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:48,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:48,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:48,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:48,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:48,800 INFO L87 Difference]: Start difference. First operand 766 states and 1194 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:49,098 INFO L93 Difference]: Finished difference Result 1511 states and 2361 transitions. [2022-01-10 08:19:49,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:49,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:49,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:49,105 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:49,105 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:49,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:49,115 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 803 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:49,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 1216 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:49,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5504978662873399) internal successors, (1090), 706 states have internal predecessors, (1090), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1187 transitions. [2022-01-10 08:19:49,173 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1187 transitions. Word has length 179 [2022-01-10 08:19:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:49,173 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1187 transitions. [2022-01-10 08:19:49,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1187 transitions. [2022-01-10 08:19:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:49,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:49,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:49,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:49,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:49,387 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash -13416436, now seen corresponding path program 1 times [2022-01-10 08:19:49,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:49,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418246105] [2022-01-10 08:19:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:49,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:49,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:49,390 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:49,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 08:19:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:49,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:49,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:49,768 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 08:19:49,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:49,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418246105] [2022-01-10 08:19:49,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418246105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:49,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:49,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:49,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686307699] [2022-01-10 08:19:49,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:49,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:49,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:49,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:49,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:49,770 INFO L87 Difference]: Start difference. First operand 766 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:50,092 INFO L93 Difference]: Finished difference Result 1511 states and 2347 transitions. [2022-01-10 08:19:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:50,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:50,096 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:50,096 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:50,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:50,098 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 796 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:50,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1209 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:19:50,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5405405405405406) internal successors, (1083), 706 states have internal predecessors, (1083), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1180 transitions. [2022-01-10 08:19:50,131 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1180 transitions. Word has length 179 [2022-01-10 08:19:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:50,132 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1180 transitions. [2022-01-10 08:19:50,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:50,132 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1180 transitions. [2022-01-10 08:19:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:50,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:50,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:50,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:50,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:50,345 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:50,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash -936583862, now seen corresponding path program 1 times [2022-01-10 08:19:50,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:50,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590439305] [2022-01-10 08:19:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:50,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:50,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:50,347 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:50,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 08:19:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:50,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:50,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:50,793 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 08:19:50,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:50,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590439305] [2022-01-10 08:19:50,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590439305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:50,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:50,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:50,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010255784] [2022-01-10 08:19:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:50,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:50,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:50,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:50,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:50,795 INFO L87 Difference]: Start difference. First operand 766 states and 1180 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:51,178 INFO L93 Difference]: Finished difference Result 1511 states and 2333 transitions. [2022-01-10 08:19:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:51,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:51,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:51,181 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:51,181 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:51,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:51,183 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 790 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:51,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 1202 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:19:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.530583214793741) internal successors, (1076), 706 states have internal predecessors, (1076), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1173 transitions. [2022-01-10 08:19:51,217 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1173 transitions. Word has length 179 [2022-01-10 08:19:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:51,217 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1173 transitions. [2022-01-10 08:19:51,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1173 transitions. [2022-01-10 08:19:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:51,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:51,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:51,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:51,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:51,427 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:51,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1898878670, now seen corresponding path program 1 times [2022-01-10 08:19:51,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:51,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710212660] [2022-01-10 08:19:51,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:51,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:51,428 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:51,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 08:19:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:51,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:51,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:51,915 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 08:19:51,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:51,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:51,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710212660] [2022-01-10 08:19:51,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710212660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:51,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:51,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:51,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093435970] [2022-01-10 08:19:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:51,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:51,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:51,917 INFO L87 Difference]: Start difference. First operand 766 states and 1173 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:52,223 INFO L93 Difference]: Finished difference Result 1511 states and 2319 transitions. [2022-01-10 08:19:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:52,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:52,228 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:52,228 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:52,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:52,230 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 784 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:52,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 1195 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:19:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5206258890469417) internal successors, (1069), 706 states have internal predecessors, (1069), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1166 transitions. [2022-01-10 08:19:52,264 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1166 transitions. Word has length 179 [2022-01-10 08:19:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:52,264 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1166 transitions. [2022-01-10 08:19:52,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1166 transitions. [2022-01-10 08:19:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:52,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:52,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:52,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:52,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:52,475 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:52,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:52,475 INFO L85 PathProgramCache]: Analyzing trace with hash 604871882, now seen corresponding path program 1 times [2022-01-10 08:19:52,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:52,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110075139] [2022-01-10 08:19:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:52,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:52,483 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:52,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 08:19:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:52,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:52,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:52,805 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 08:19:52,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:52,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:52,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110075139] [2022-01-10 08:19:52,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110075139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:52,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:52,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:52,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595318544] [2022-01-10 08:19:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:52,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:52,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:52,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:52,807 INFO L87 Difference]: Start difference. First operand 766 states and 1166 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:53,066 INFO L93 Difference]: Finished difference Result 1511 states and 2305 transitions. [2022-01-10 08:19:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:53,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:53,076 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:53,076 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:53,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:53,084 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 778 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:53,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 1188 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5106685633001422) internal successors, (1062), 706 states have internal predecessors, (1062), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1159 transitions. [2022-01-10 08:19:53,162 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1159 transitions. Word has length 179 [2022-01-10 08:19:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:53,163 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1159 transitions. [2022-01-10 08:19:53,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1159 transitions. [2022-01-10 08:19:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:53,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:53,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:53,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:53,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:53,377 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1099438258, now seen corresponding path program 1 times [2022-01-10 08:19:53,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:53,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754414201] [2022-01-10 08:19:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:53,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:53,379 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:53,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 08:19:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:53,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:53,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:53,715 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 08:19:53,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:53,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754414201] [2022-01-10 08:19:53,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754414201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:53,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:53,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:53,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305820857] [2022-01-10 08:19:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:53,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:53,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:53,717 INFO L87 Difference]: Start difference. First operand 766 states and 1159 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:54,111 INFO L93 Difference]: Finished difference Result 1511 states and 2291 transitions. [2022-01-10 08:19:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:54,114 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:54,114 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:54,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:54,116 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 772 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:54,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 1181 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:19:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.500711237553343) internal successors, (1055), 706 states have internal predecessors, (1055), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1152 transitions. [2022-01-10 08:19:54,158 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1152 transitions. Word has length 179 [2022-01-10 08:19:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:54,158 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1152 transitions. [2022-01-10 08:19:54,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:54,158 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1152 transitions. [2022-01-10 08:19:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:54,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:54,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:54,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:54,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:54,372 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1477983306, now seen corresponding path program 1 times [2022-01-10 08:19:54,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:54,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611761963] [2022-01-10 08:19:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:54,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:54,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:54,374 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:54,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 08:19:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:54,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:54,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:54,811 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 08:19:54,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:54,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:54,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611761963] [2022-01-10 08:19:54,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611761963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:54,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:54,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:54,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032802901] [2022-01-10 08:19:54,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:54,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:54,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:54,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:54,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:54,813 INFO L87 Difference]: Start difference. First operand 766 states and 1152 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:55,074 INFO L93 Difference]: Finished difference Result 1511 states and 2277 transitions. [2022-01-10 08:19:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:55,077 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:55,077 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:55,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:55,080 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 766 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:55,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 1174 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:55,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.4907539118065434) internal successors, (1048), 706 states have internal predecessors, (1048), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1145 transitions. [2022-01-10 08:19:55,118 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1145 transitions. Word has length 179 [2022-01-10 08:19:55,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:55,118 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1145 transitions. [2022-01-10 08:19:55,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1145 transitions. [2022-01-10 08:19:55,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:55,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:55,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:55,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:55,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:55,331 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1764010034, now seen corresponding path program 1 times [2022-01-10 08:19:55,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:55,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029924823] [2022-01-10 08:19:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:55,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:55,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:55,333 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:55,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 08:19:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:55,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:55,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:55,695 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 08:19:55,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:55,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:55,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029924823] [2022-01-10 08:19:55,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029924823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:55,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:55,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:55,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103153415] [2022-01-10 08:19:55,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:55,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:55,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:55,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:55,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:55,697 INFO L87 Difference]: Start difference. First operand 766 states and 1145 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:55,992 INFO L93 Difference]: Finished difference Result 1511 states and 2263 transitions. [2022-01-10 08:19:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:19:55,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:55,995 INFO L225 Difference]: With dead ends: 1511 [2022-01-10 08:19:55,995 INFO L226 Difference]: Without dead ends: 766 [2022-01-10 08:19:55,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:55,998 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 760 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:55,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 1167 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:19:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-01-10 08:19:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2022-01-10 08:19:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.4807965860597438) internal successors, (1041), 706 states have internal predecessors, (1041), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 08:19:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1138 transitions. [2022-01-10 08:19:56,036 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1138 transitions. Word has length 179 [2022-01-10 08:19:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:56,036 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1138 transitions. [2022-01-10 08:19:56,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1138 transitions. [2022-01-10 08:19:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:56,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:56,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:56,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:56,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:56,248 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 625261514, now seen corresponding path program 1 times [2022-01-10 08:19:56,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641320974] [2022-01-10 08:19:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:56,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:56,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:56,251 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:56,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 08:19:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:56,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:56,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:56,584 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 08:19:56,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:56,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:56,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641320974] [2022-01-10 08:19:56,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641320974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:56,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:56,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:56,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088997543] [2022-01-10 08:19:56,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:56,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:56,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:56,586 INFO L87 Difference]: Start difference. First operand 766 states and 1138 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:56,976 INFO L93 Difference]: Finished difference Result 1703 states and 2547 transitions. [2022-01-10 08:19:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:19:56,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:56,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:56,979 INFO L225 Difference]: With dead ends: 1703 [2022-01-10 08:19:56,979 INFO L226 Difference]: Without dead ends: 958 [2022-01-10 08:19:56,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:56,981 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 879 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:56,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 1160 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:19:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-01-10 08:19:57,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 958. [2022-01-10 08:19:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 889 states have (on average 1.4578177727784027) internal successors, (1296), 892 states have internal predecessors, (1296), 51 states have call successors, (51), 17 states have call predecessors, (51), 17 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:19:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1397 transitions. [2022-01-10 08:19:57,017 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1397 transitions. Word has length 179 [2022-01-10 08:19:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:57,017 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1397 transitions. [2022-01-10 08:19:57,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:57,017 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1397 transitions. [2022-01-10 08:19:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:57,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:57,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:57,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:57,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:57,227 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:57,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash 84832008, now seen corresponding path program 1 times [2022-01-10 08:19:57,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:57,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501426955] [2022-01-10 08:19:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:57,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:57,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:57,229 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:57,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 08:19:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:57,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:57,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:57,553 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 08:19:57,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:57,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:57,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501426955] [2022-01-10 08:19:57,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501426955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:57,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:57,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:57,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114319309] [2022-01-10 08:19:57,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:57,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:57,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:57,555 INFO L87 Difference]: Start difference. First operand 958 states and 1397 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:57,968 INFO L93 Difference]: Finished difference Result 2087 states and 3065 transitions. [2022-01-10 08:19:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:19:57,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:57,979 INFO L225 Difference]: With dead ends: 2087 [2022-01-10 08:19:57,979 INFO L226 Difference]: Without dead ends: 1150 [2022-01-10 08:19:57,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:57,981 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 873 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:57,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 1151 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:19:57,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-01-10 08:19:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2022-01-10 08:19:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1075 states have (on average 1.4390697674418604) internal successors, (1547), 1078 states have internal predecessors, (1547), 53 states have call successors, (53), 21 states have call predecessors, (53), 21 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 08:19:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1652 transitions. [2022-01-10 08:19:58,024 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1652 transitions. Word has length 179 [2022-01-10 08:19:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:58,024 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1652 transitions. [2022-01-10 08:19:58,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1652 transitions. [2022-01-10 08:19:58,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:58,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:58,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:58,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 08:19:58,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:58,233 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2081069931, now seen corresponding path program 1 times [2022-01-10 08:19:58,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:58,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117183000] [2022-01-10 08:19:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:58,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:58,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:58,235 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:58,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 08:19:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:58,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:58,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:58,619 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 08:19:58,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:58,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:58,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117183000] [2022-01-10 08:19:58,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117183000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:58,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:58,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:58,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680285684] [2022-01-10 08:19:58,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:58,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:58,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:58,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:58,620 INFO L87 Difference]: Start difference. First operand 1150 states and 1652 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:19:59,163 INFO L93 Difference]: Finished difference Result 2471 states and 3575 transitions. [2022-01-10 08:19:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:19:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:19:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:19:59,174 INFO L225 Difference]: With dead ends: 2471 [2022-01-10 08:19:59,174 INFO L226 Difference]: Without dead ends: 1342 [2022-01-10 08:19:59,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:19:59,180 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 866 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:19:59,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 1144 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:19:59,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-01-10 08:19:59,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1342. [2022-01-10 08:19:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1261 states have (on average 1.422680412371134) internal successors, (1794), 1264 states have internal predecessors, (1794), 55 states have call successors, (55), 25 states have call predecessors, (55), 25 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 08:19:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1903 transitions. [2022-01-10 08:19:59,231 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1903 transitions. Word has length 179 [2022-01-10 08:19:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:19:59,231 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1903 transitions. [2022-01-10 08:19:59,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:19:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1903 transitions. [2022-01-10 08:19:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:19:59,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:19:59,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:19:59,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 08:19:59,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:19:59,440 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:19:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:19:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1780654745, now seen corresponding path program 1 times [2022-01-10 08:19:59,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:19:59,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678259227] [2022-01-10 08:19:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:19:59,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:19:59,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:19:59,444 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:19:59,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 08:19:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:19:59,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:19:59,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:19:59,808 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 08:19:59,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:19:59,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:19:59,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678259227] [2022-01-10 08:19:59,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678259227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:19:59,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:19:59,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:19:59,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261149809] [2022-01-10 08:19:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:19:59,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:19:59,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:19:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:19:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:19:59,810 INFO L87 Difference]: Start difference. First operand 1342 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:00,417 INFO L93 Difference]: Finished difference Result 2855 states and 4077 transitions. [2022-01-10 08:20:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:00,421 INFO L225 Difference]: With dead ends: 2855 [2022-01-10 08:20:00,421 INFO L226 Difference]: Without dead ends: 1534 [2022-01-10 08:20:00,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:00,424 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 859 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:00,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1137 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:20:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2022-01-10 08:20:00,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1534. [2022-01-10 08:20:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1447 states have (on average 1.4077401520387007) internal successors, (2037), 1450 states have internal predecessors, (2037), 57 states have call successors, (57), 29 states have call predecessors, (57), 29 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 08:20:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2150 transitions. [2022-01-10 08:20:00,522 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2150 transitions. Word has length 179 [2022-01-10 08:20:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:00,522 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 2150 transitions. [2022-01-10 08:20:00,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2150 transitions. [2022-01-10 08:20:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:00,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:00,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:00,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:00,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:00,743 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:00,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:00,744 INFO L85 PathProgramCache]: Analyzing trace with hash 247673162, now seen corresponding path program 1 times [2022-01-10 08:20:00,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:00,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098848625] [2022-01-10 08:20:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:00,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:00,746 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:00,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 08:20:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:00,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:00,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:01,163 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 08:20:01,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:01,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:01,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098848625] [2022-01-10 08:20:01,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098848625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:01,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:01,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:01,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052427336] [2022-01-10 08:20:01,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:01,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:01,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:01,165 INFO L87 Difference]: Start difference. First operand 1534 states and 2150 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:01,753 INFO L93 Difference]: Finished difference Result 3239 states and 4571 transitions. [2022-01-10 08:20:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:01,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:01,759 INFO L225 Difference]: With dead ends: 3239 [2022-01-10 08:20:01,759 INFO L226 Difference]: Without dead ends: 1726 [2022-01-10 08:20:01,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:01,763 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 852 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:01,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1130 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:20:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2022-01-10 08:20:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1726. [2022-01-10 08:20:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1633 states have (on average 1.3937538273116963) internal successors, (2276), 1636 states have internal predecessors, (2276), 59 states have call successors, (59), 33 states have call predecessors, (59), 33 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 08:20:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2393 transitions. [2022-01-10 08:20:01,872 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2393 transitions. Word has length 179 [2022-01-10 08:20:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:01,872 INFO L470 AbstractCegarLoop]: Abstraction has 1726 states and 2393 transitions. [2022-01-10 08:20:01,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:01,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2393 transitions. [2022-01-10 08:20:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:01,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:01,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:01,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 08:20:02,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:02,085 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2042086683, now seen corresponding path program 1 times [2022-01-10 08:20:02,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:02,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806814800] [2022-01-10 08:20:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:02,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:02,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:02,088 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:02,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 08:20:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:02,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:02,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:02,412 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 08:20:02,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:02,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806814800] [2022-01-10 08:20:02,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806814800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:02,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:02,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:02,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644392555] [2022-01-10 08:20:02,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:02,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:02,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:02,414 INFO L87 Difference]: Start difference. First operand 1726 states and 2393 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:03,137 INFO L93 Difference]: Finished difference Result 3623 states and 5057 transitions. [2022-01-10 08:20:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:03,149 INFO L225 Difference]: With dead ends: 3623 [2022-01-10 08:20:03,149 INFO L226 Difference]: Without dead ends: 1918 [2022-01-10 08:20:03,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:03,163 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 845 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:03,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1123 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:20:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2022-01-10 08:20:03,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1918. [2022-01-10 08:20:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1819 states have (on average 1.3804288070368333) internal successors, (2511), 1822 states have internal predecessors, (2511), 61 states have call successors, (61), 37 states have call predecessors, (61), 37 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 08:20:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2632 transitions. [2022-01-10 08:20:03,419 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2632 transitions. Word has length 179 [2022-01-10 08:20:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:03,419 INFO L470 AbstractCegarLoop]: Abstraction has 1918 states and 2632 transitions. [2022-01-10 08:20:03,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2632 transitions. [2022-01-10 08:20:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:03,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:03,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:03,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:03,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:03,628 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash -49210775, now seen corresponding path program 1 times [2022-01-10 08:20:03,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:03,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091564960] [2022-01-10 08:20:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:03,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:03,630 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:03,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 08:20:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:03,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:03,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:04,029 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 08:20:04,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:04,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:04,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091564960] [2022-01-10 08:20:04,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091564960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:04,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:04,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:04,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875864643] [2022-01-10 08:20:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:04,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:04,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:04,031 INFO L87 Difference]: Start difference. First operand 1918 states and 2632 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:04,556 INFO L93 Difference]: Finished difference Result 4007 states and 5535 transitions. [2022-01-10 08:20:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:04,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:04,561 INFO L225 Difference]: With dead ends: 4007 [2022-01-10 08:20:04,561 INFO L226 Difference]: Without dead ends: 2110 [2022-01-10 08:20:04,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:04,565 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 838 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:04,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1116 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:20:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-01-10 08:20:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2110. [2022-01-10 08:20:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2005 states have (on average 1.3675810473815462) internal successors, (2742), 2008 states have internal predecessors, (2742), 63 states have call successors, (63), 41 states have call predecessors, (63), 41 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 08:20:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 2867 transitions. [2022-01-10 08:20:04,693 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 2867 transitions. Word has length 179 [2022-01-10 08:20:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:04,693 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 2867 transitions. [2022-01-10 08:20:04,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 2867 transitions. [2022-01-10 08:20:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:04,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:04,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:04,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:04,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:04,894 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash -24188540, now seen corresponding path program 1 times [2022-01-10 08:20:04,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:04,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833355508] [2022-01-10 08:20:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:04,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:04,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:04,896 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:04,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 08:20:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:05,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:05,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:05,310 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 08:20:05,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:05,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:05,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833355508] [2022-01-10 08:20:05,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833355508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:05,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:05,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:05,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604216089] [2022-01-10 08:20:05,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:05,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:05,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:05,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:05,311 INFO L87 Difference]: Start difference. First operand 2110 states and 2867 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:05,811 INFO L93 Difference]: Finished difference Result 4391 states and 6005 transitions. [2022-01-10 08:20:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:05,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:05,822 INFO L225 Difference]: With dead ends: 4391 [2022-01-10 08:20:05,822 INFO L226 Difference]: Without dead ends: 2302 [2022-01-10 08:20:05,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:05,853 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 830 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:05,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 1109 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:20:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-01-10 08:20:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2022-01-10 08:20:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2191 states have (on average 1.3550890004564127) internal successors, (2969), 2194 states have internal predecessors, (2969), 65 states have call successors, (65), 45 states have call predecessors, (65), 45 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 08:20:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3098 transitions. [2022-01-10 08:20:05,957 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3098 transitions. Word has length 179 [2022-01-10 08:20:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:05,957 INFO L470 AbstractCegarLoop]: Abstraction has 2302 states and 3098 transitions. [2022-01-10 08:20:05,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:05,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3098 transitions. [2022-01-10 08:20:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:05,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:05,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:05,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:06,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:06,163 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:06,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2127044511, now seen corresponding path program 1 times [2022-01-10 08:20:06,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:06,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456794576] [2022-01-10 08:20:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:06,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:06,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:06,165 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:06,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 08:20:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:06,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:06,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:06,486 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 08:20:06,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:06,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:06,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456794576] [2022-01-10 08:20:06,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456794576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:06,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:06,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:06,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104693347] [2022-01-10 08:20:06,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:06,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:06,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:06,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:06,488 INFO L87 Difference]: Start difference. First operand 2302 states and 3098 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:06,973 INFO L93 Difference]: Finished difference Result 4775 states and 6467 transitions. [2022-01-10 08:20:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:06,981 INFO L225 Difference]: With dead ends: 4775 [2022-01-10 08:20:06,981 INFO L226 Difference]: Without dead ends: 2494 [2022-01-10 08:20:06,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:06,986 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 823 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:06,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 1102 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:20:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2022-01-10 08:20:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2494. [2022-01-10 08:20:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 2377 states have (on average 1.3428691628102651) internal successors, (3192), 2380 states have internal predecessors, (3192), 67 states have call successors, (67), 49 states have call predecessors, (67), 49 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 08:20:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3325 transitions. [2022-01-10 08:20:07,126 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3325 transitions. Word has length 179 [2022-01-10 08:20:07,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:07,127 INFO L470 AbstractCegarLoop]: Abstraction has 2494 states and 3325 transitions. [2022-01-10 08:20:07,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3325 transitions. [2022-01-10 08:20:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:07,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:07,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:07,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:07,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:07,336 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash 725950949, now seen corresponding path program 1 times [2022-01-10 08:20:07,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975104159] [2022-01-10 08:20:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:07,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:07,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:07,338 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:07,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 08:20:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:07,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:07,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:07,698 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 08:20:07,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:07,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975104159] [2022-01-10 08:20:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975104159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:07,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:07,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:07,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411365926] [2022-01-10 08:20:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:07,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:07,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:07,699 INFO L87 Difference]: Start difference. First operand 2494 states and 3325 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:08,306 INFO L93 Difference]: Finished difference Result 5159 states and 6921 transitions. [2022-01-10 08:20:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:08,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:08,312 INFO L225 Difference]: With dead ends: 5159 [2022-01-10 08:20:08,312 INFO L226 Difference]: Without dead ends: 2686 [2022-01-10 08:20:08,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:08,316 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 816 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:08,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 1095 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:20:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-10 08:20:08,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2022-01-10 08:20:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2563 states have (on average 1.330862270776434) internal successors, (3411), 2566 states have internal predecessors, (3411), 69 states have call successors, (69), 53 states have call predecessors, (69), 53 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2022-01-10 08:20:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 3548 transitions. [2022-01-10 08:20:08,467 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 3548 transitions. Word has length 179 [2022-01-10 08:20:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:08,467 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 3548 transitions. [2022-01-10 08:20:08,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 3548 transitions. [2022-01-10 08:20:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:08,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:08,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:08,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:08,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:08,681 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash -672859136, now seen corresponding path program 1 times [2022-01-10 08:20:08,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:08,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071810404] [2022-01-10 08:20:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:08,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:08,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:08,683 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:08,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 08:20:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:08,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:08,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:09,005 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 08:20:09,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:09,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:09,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071810404] [2022-01-10 08:20:09,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071810404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:09,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:09,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:09,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335044964] [2022-01-10 08:20:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:09,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:09,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:09,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:09,008 INFO L87 Difference]: Start difference. First operand 2686 states and 3548 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:09,470 INFO L93 Difference]: Finished difference Result 5543 states and 7367 transitions. [2022-01-10 08:20:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:09,493 INFO L225 Difference]: With dead ends: 5543 [2022-01-10 08:20:09,493 INFO L226 Difference]: Without dead ends: 2878 [2022-01-10 08:20:09,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:09,499 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 809 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:09,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 1088 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:20:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2022-01-10 08:20:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2878. [2022-01-10 08:20:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2749 states have (on average 1.3190251000363769) internal successors, (3626), 2752 states have internal predecessors, (3626), 71 states have call successors, (71), 57 states have call predecessors, (71), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:20:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 3767 transitions. [2022-01-10 08:20:09,685 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 3767 transitions. Word has length 179 [2022-01-10 08:20:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:09,685 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 3767 transitions. [2022-01-10 08:20:09,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 3767 transitions. [2022-01-10 08:20:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:20:09,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:09,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:09,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:09,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:09,894 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -795029884, now seen corresponding path program 1 times [2022-01-10 08:20:09,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:09,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405910459] [2022-01-10 08:20:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:09,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:09,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:09,896 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:09,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 08:20:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:10,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:20:10,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:10,257 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 08:20:10,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:10,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:10,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405910459] [2022-01-10 08:20:10,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405910459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:10,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:10,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:20:10,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079913315] [2022-01-10 08:20:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:10,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:20:10,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:20:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:20:10,259 INFO L87 Difference]: Start difference. First operand 2878 states and 3767 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:10,602 INFO L93 Difference]: Finished difference Result 8545 states and 11200 transitions. [2022-01-10 08:20:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:20:10,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:20:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:10,611 INFO L225 Difference]: With dead ends: 8545 [2022-01-10 08:20:10,612 INFO L226 Difference]: Without dead ends: 5689 [2022-01-10 08:20:10,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:20:10,617 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 464 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:10,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1109 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2022-01-10 08:20:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 5687. [2022-01-10 08:20:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5436 states have (on average 1.3088668138337012) internal successors, (7115), 5442 states have internal predecessors, (7115), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 7387 transitions. [2022-01-10 08:20:10,981 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 7387 transitions. Word has length 179 [2022-01-10 08:20:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:10,981 INFO L470 AbstractCegarLoop]: Abstraction has 5687 states and 7387 transitions. [2022-01-10 08:20:10,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:20:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 7387 transitions. [2022-01-10 08:20:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:10,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:10,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:10,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:11,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:11,196 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -571141532, now seen corresponding path program 1 times [2022-01-10 08:20:11,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626291540] [2022-01-10 08:20:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:11,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:11,199 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:11,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 08:20:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:11,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:11,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 08:20:11,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:11,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:11,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626291540] [2022-01-10 08:20:11,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626291540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:11,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:11,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:11,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464577572] [2022-01-10 08:20:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:11,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:11,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:11,680 INFO L87 Difference]: Start difference. First operand 5687 states and 7387 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:12,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:12,255 INFO L93 Difference]: Finished difference Result 15552 states and 20319 transitions. [2022-01-10 08:20:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:12,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:12,278 INFO L225 Difference]: With dead ends: 15552 [2022-01-10 08:20:12,278 INFO L226 Difference]: Without dead ends: 9887 [2022-01-10 08:20:12,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:12,288 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 490 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:12,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 2403 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2022-01-10 08:20:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 5759. [2022-01-10 08:20:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5759 states, 5508 states have (on average 1.3004720406681192) internal successors, (7163), 5514 states have internal predecessors, (7163), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 7435 transitions. [2022-01-10 08:20:12,744 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 7435 transitions. Word has length 291 [2022-01-10 08:20:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:12,744 INFO L470 AbstractCegarLoop]: Abstraction has 5759 states and 7435 transitions. [2022-01-10 08:20:12,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 7435 transitions. [2022-01-10 08:20:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:12,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:12,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:12,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:12,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:12,959 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -809338332, now seen corresponding path program 1 times [2022-01-10 08:20:12,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:12,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335222992] [2022-01-10 08:20:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:12,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:12,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:12,961 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:12,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 08:20:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:13,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:13,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 08:20:13,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:13,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:13,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335222992] [2022-01-10 08:20:13,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335222992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:13,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:13,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:13,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574831276] [2022-01-10 08:20:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:13,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:13,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:13,455 INFO L87 Difference]: Start difference. First operand 5759 states and 7435 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:14,120 INFO L93 Difference]: Finished difference Result 12140 states and 15773 transitions. [2022-01-10 08:20:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:14,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:14,157 INFO L225 Difference]: With dead ends: 12140 [2022-01-10 08:20:14,157 INFO L226 Difference]: Without dead ends: 6403 [2022-01-10 08:20:14,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:14,164 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 440 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:14,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 2317 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2022-01-10 08:20:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 5771. [2022-01-10 08:20:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5771 states, 5520 states have (on average 1.2918478260869566) internal successors, (7131), 5526 states have internal predecessors, (7131), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5771 states to 5771 states and 7403 transitions. [2022-01-10 08:20:14,592 INFO L78 Accepts]: Start accepts. Automaton has 5771 states and 7403 transitions. Word has length 291 [2022-01-10 08:20:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:14,592 INFO L470 AbstractCegarLoop]: Abstraction has 5771 states and 7403 transitions. [2022-01-10 08:20:14,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5771 states and 7403 transitions. [2022-01-10 08:20:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:14,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:14,601 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:14,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:14,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:14,813 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:14,814 INFO L85 PathProgramCache]: Analyzing trace with hash -492260892, now seen corresponding path program 1 times [2022-01-10 08:20:14,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:14,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041382758] [2022-01-10 08:20:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:14,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:14,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:14,816 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:14,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 08:20:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:14,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:14,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 08:20:15,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:15,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:15,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041382758] [2022-01-10 08:20:15,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041382758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:15,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:15,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:15,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221127257] [2022-01-10 08:20:15,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:15,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:15,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:15,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:15,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:15,286 INFO L87 Difference]: Start difference. First operand 5771 states and 7403 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:15,793 INFO L93 Difference]: Finished difference Result 12108 states and 15637 transitions. [2022-01-10 08:20:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:15,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:15,805 INFO L225 Difference]: With dead ends: 12108 [2022-01-10 08:20:15,805 INFO L226 Difference]: Without dead ends: 6359 [2022-01-10 08:20:15,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:15,812 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 401 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:15,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 2302 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6359 states. [2022-01-10 08:20:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6359 to 5783. [2022-01-10 08:20:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5532 states have (on average 1.2832610267534346) internal successors, (7099), 5538 states have internal predecessors, (7099), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 7371 transitions. [2022-01-10 08:20:16,323 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 7371 transitions. Word has length 291 [2022-01-10 08:20:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:16,324 INFO L470 AbstractCegarLoop]: Abstraction has 5783 states and 7371 transitions. [2022-01-10 08:20:16,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 7371 transitions. [2022-01-10 08:20:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:16,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:16,328 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:16,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:16,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:16,537 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:16,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash -847005276, now seen corresponding path program 1 times [2022-01-10 08:20:16,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:16,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775476615] [2022-01-10 08:20:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:16,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:16,539 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:16,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 08:20:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:16,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:16,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 08:20:17,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:17,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:17,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775476615] [2022-01-10 08:20:17,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775476615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:17,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:17,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:17,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573323062] [2022-01-10 08:20:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:17,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:17,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:17,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:17,084 INFO L87 Difference]: Start difference. First operand 5783 states and 7371 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:17,751 INFO L93 Difference]: Finished difference Result 12076 states and 15501 transitions. [2022-01-10 08:20:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:17,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:17,819 INFO L225 Difference]: With dead ends: 12076 [2022-01-10 08:20:17,819 INFO L226 Difference]: Without dead ends: 6315 [2022-01-10 08:20:17,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:17,827 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 362 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:17,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2287 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2022-01-10 08:20:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 5795. [2022-01-10 08:20:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5795 states, 5544 states have (on average 1.2747113997113997) internal successors, (7067), 5550 states have internal predecessors, (7067), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5795 states to 5795 states and 7339 transitions. [2022-01-10 08:20:18,304 INFO L78 Accepts]: Start accepts. Automaton has 5795 states and 7339 transitions. Word has length 291 [2022-01-10 08:20:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:18,304 INFO L470 AbstractCegarLoop]: Abstraction has 5795 states and 7339 transitions. [2022-01-10 08:20:18,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5795 states and 7339 transitions. [2022-01-10 08:20:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:18,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:18,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:18,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 08:20:18,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:18,515 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1674604188, now seen corresponding path program 1 times [2022-01-10 08:20:18,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:18,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649511456] [2022-01-10 08:20:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:18,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:18,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:18,517 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:18,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 08:20:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:18,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:18,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 08:20:18,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:18,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649511456] [2022-01-10 08:20:18,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649511456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:18,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:18,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:18,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144610622] [2022-01-10 08:20:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:18,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:18,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:18,947 INFO L87 Difference]: Start difference. First operand 5795 states and 7339 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:19,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:19,502 INFO L93 Difference]: Finished difference Result 12044 states and 15365 transitions. [2022-01-10 08:20:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:19,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:19,513 INFO L225 Difference]: With dead ends: 12044 [2022-01-10 08:20:19,513 INFO L226 Difference]: Without dead ends: 6271 [2022-01-10 08:20:19,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:19,520 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 323 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:19,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2272 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6271 states. [2022-01-10 08:20:20,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6271 to 5807. [2022-01-10 08:20:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5807 states, 5556 states have (on average 1.2661987041036717) internal successors, (7035), 5562 states have internal predecessors, (7035), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 7307 transitions. [2022-01-10 08:20:20,014 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 7307 transitions. Word has length 291 [2022-01-10 08:20:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:20,016 INFO L470 AbstractCegarLoop]: Abstraction has 5807 states and 7307 transitions. [2022-01-10 08:20:20,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 7307 transitions. [2022-01-10 08:20:20,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:20,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:20,020 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:20,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:20,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:20,229 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1871198500, now seen corresponding path program 1 times [2022-01-10 08:20:20,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:20,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285969982] [2022-01-10 08:20:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:20,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:20,232 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:20,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 08:20:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:20,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:20,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 08:20:20,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:20,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285969982] [2022-01-10 08:20:20,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285969982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:20,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:20,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:20,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348782331] [2022-01-10 08:20:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:20,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:20,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:20,726 INFO L87 Difference]: Start difference. First operand 5807 states and 7307 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:21,249 INFO L93 Difference]: Finished difference Result 12012 states and 15229 transitions. [2022-01-10 08:20:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:21,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:21,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:21,262 INFO L225 Difference]: With dead ends: 12012 [2022-01-10 08:20:21,262 INFO L226 Difference]: Without dead ends: 6227 [2022-01-10 08:20:21,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:21,270 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 284 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:21,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2257 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6227 states. [2022-01-10 08:20:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6227 to 5819. [2022-01-10 08:20:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5819 states, 5568 states have (on average 1.2577227011494252) internal successors, (7003), 5574 states have internal predecessors, (7003), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5819 states to 5819 states and 7275 transitions. [2022-01-10 08:20:21,873 INFO L78 Accepts]: Start accepts. Automaton has 5819 states and 7275 transitions. Word has length 291 [2022-01-10 08:20:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:21,873 INFO L470 AbstractCegarLoop]: Abstraction has 5819 states and 7275 transitions. [2022-01-10 08:20:21,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5819 states and 7275 transitions. [2022-01-10 08:20:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:21,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:21,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:21,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:22,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:22,086 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1030336740, now seen corresponding path program 1 times [2022-01-10 08:20:22,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:22,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455105470] [2022-01-10 08:20:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:22,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:22,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:22,090 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:22,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 08:20:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:22,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:22,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:20:22,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:22,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:22,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455105470] [2022-01-10 08:20:22,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455105470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:22,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:22,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:22,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654480295] [2022-01-10 08:20:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:22,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:22,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:22,434 INFO L87 Difference]: Start difference. First operand 5819 states and 7275 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:23,068 INFO L93 Difference]: Finished difference Result 11924 states and 15021 transitions. [2022-01-10 08:20:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:23,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:23,080 INFO L225 Difference]: With dead ends: 11924 [2022-01-10 08:20:23,080 INFO L226 Difference]: Without dead ends: 6127 [2022-01-10 08:20:23,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:23,089 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 206 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:23,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 2227 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:23,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2022-01-10 08:20:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 5831. [2022-01-10 08:20:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 5580 states have (on average 1.2492831541218639) internal successors, (6971), 5586 states have internal predecessors, (6971), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 7243 transitions. [2022-01-10 08:20:23,635 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 7243 transitions. Word has length 291 [2022-01-10 08:20:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:23,636 INFO L470 AbstractCegarLoop]: Abstraction has 5831 states and 7243 transitions. [2022-01-10 08:20:23,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 7243 transitions. [2022-01-10 08:20:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:23,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:23,639 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:23,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:23,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:23,848 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:23,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash -168769372, now seen corresponding path program 1 times [2022-01-10 08:20:23,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:23,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050936550] [2022-01-10 08:20:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:23,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:23,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:23,850 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:23,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-01-10 08:20:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:24,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:24,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 08:20:24,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:24,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050936550] [2022-01-10 08:20:24,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050936550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:24,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:24,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:24,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952308449] [2022-01-10 08:20:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:24,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:24,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:24,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:24,293 INFO L87 Difference]: Start difference. First operand 5831 states and 7243 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:25,056 INFO L93 Difference]: Finished difference Result 14664 states and 18443 transitions. [2022-01-10 08:20:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:25,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:25,071 INFO L225 Difference]: With dead ends: 14664 [2022-01-10 08:20:25,071 INFO L226 Difference]: Without dead ends: 8855 [2022-01-10 08:20:25,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:25,079 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 170 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:25,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 2227 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8855 states. [2022-01-10 08:20:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8855 to 5975. [2022-01-10 08:20:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5975 states, 5724 states have (on average 1.2430118798043326) internal successors, (7115), 5730 states have internal predecessors, (7115), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 7387 transitions. [2022-01-10 08:20:25,667 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 7387 transitions. Word has length 291 [2022-01-10 08:20:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:25,667 INFO L470 AbstractCegarLoop]: Abstraction has 5975 states and 7387 transitions. [2022-01-10 08:20:25,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 7387 transitions. [2022-01-10 08:20:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:25,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:25,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:25,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-01-10 08:20:25,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:25,878 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:25,878 INFO L85 PathProgramCache]: Analyzing trace with hash 143962212, now seen corresponding path program 1 times [2022-01-10 08:20:25,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:25,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757378618] [2022-01-10 08:20:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:25,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:25,880 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:25,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-01-10 08:20:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:26,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:26,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 08:20:26,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:26,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757378618] [2022-01-10 08:20:26,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757378618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:26,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:26,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:26,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068561030] [2022-01-10 08:20:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:26,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:26,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:26,340 INFO L87 Difference]: Start difference. First operand 5975 states and 7387 transitions. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:26,895 INFO L93 Difference]: Finished difference Result 12124 states and 15093 transitions. [2022-01-10 08:20:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:26,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:26,907 INFO L225 Difference]: With dead ends: 12124 [2022-01-10 08:20:26,907 INFO L226 Difference]: Without dead ends: 6171 [2022-01-10 08:20:26,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:26,915 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 127 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:26,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 2192 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2022-01-10 08:20:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 5987. [2022-01-10 08:20:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5987 states, 5736 states have (on average 1.2348326359832635) internal successors, (7083), 5742 states have internal predecessors, (7083), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 7355 transitions. [2022-01-10 08:20:27,485 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 7355 transitions. Word has length 291 [2022-01-10 08:20:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:27,485 INFO L470 AbstractCegarLoop]: Abstraction has 5987 states and 7355 transitions. [2022-01-10 08:20:27,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 7355 transitions. [2022-01-10 08:20:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:27,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:27,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:27,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:27,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:27,697 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1060202532, now seen corresponding path program 1 times [2022-01-10 08:20:27,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:27,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32542882] [2022-01-10 08:20:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:27,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:27,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:27,699 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:27,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-01-10 08:20:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:27,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:27,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 08:20:28,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:28,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:28,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32542882] [2022-01-10 08:20:28,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32542882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:28,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:28,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:28,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075060608] [2022-01-10 08:20:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:28,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:28,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:28,176 INFO L87 Difference]: Start difference. First operand 5987 states and 7355 transitions. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:28,730 INFO L93 Difference]: Finished difference Result 12092 states and 14957 transitions. [2022-01-10 08:20:28,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:28,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:28,743 INFO L225 Difference]: With dead ends: 12092 [2022-01-10 08:20:28,743 INFO L226 Difference]: Without dead ends: 6127 [2022-01-10 08:20:28,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:28,752 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 88 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:28,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2177 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2022-01-10 08:20:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 5999. [2022-01-10 08:20:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5748 states have (on average 1.226687543493389) internal successors, (7051), 5754 states have internal predecessors, (7051), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 7323 transitions. [2022-01-10 08:20:29,493 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 7323 transitions. Word has length 291 [2022-01-10 08:20:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:29,493 INFO L470 AbstractCegarLoop]: Abstraction has 5999 states and 7323 transitions. [2022-01-10 08:20:29,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 7323 transitions. [2022-01-10 08:20:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:29,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:29,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:29,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:29,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:29,705 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash -123539484, now seen corresponding path program 1 times [2022-01-10 08:20:29,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:29,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151069993] [2022-01-10 08:20:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:29,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:29,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:29,707 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:29,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-01-10 08:20:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:29,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:29,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 08:20:30,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:30,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:30,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151069993] [2022-01-10 08:20:30,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151069993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:30,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:30,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:30,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529090566] [2022-01-10 08:20:30,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:30,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:30,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:30,151 INFO L87 Difference]: Start difference. First operand 5999 states and 7323 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:30,745 INFO L93 Difference]: Finished difference Result 12060 states and 14821 transitions. [2022-01-10 08:20:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:30,757 INFO L225 Difference]: With dead ends: 12060 [2022-01-10 08:20:30,757 INFO L226 Difference]: Without dead ends: 6083 [2022-01-10 08:20:30,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:30,763 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 49 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:30,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 2162 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6083 states. [2022-01-10 08:20:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 6011. [2022-01-10 08:20:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 5760 states have (on average 1.218576388888889) internal successors, (7019), 5766 states have internal predecessors, (7019), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7291 transitions. [2022-01-10 08:20:31,362 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7291 transitions. Word has length 291 [2022-01-10 08:20:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:31,363 INFO L470 AbstractCegarLoop]: Abstraction has 6011 states and 7291 transitions. [2022-01-10 08:20:31,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7291 transitions. [2022-01-10 08:20:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:31,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:31,367 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:31,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:31,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:31,577 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash -389724252, now seen corresponding path program 1 times [2022-01-10 08:20:31,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:31,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897723930] [2022-01-10 08:20:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:31,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:31,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:31,579 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:31,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-01-10 08:20:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:31,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:20:31,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 08:20:32,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:32,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:32,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897723930] [2022-01-10 08:20:32,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897723930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:32,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:32,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:20:32,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370994469] [2022-01-10 08:20:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:32,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:32,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:32,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:32,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:32,021 INFO L87 Difference]: Start difference. First operand 6011 states and 7291 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:32,606 INFO L93 Difference]: Finished difference Result 12028 states and 14685 transitions. [2022-01-10 08:20:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:32,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:32,618 INFO L225 Difference]: With dead ends: 12028 [2022-01-10 08:20:32,618 INFO L226 Difference]: Without dead ends: 6039 [2022-01-10 08:20:32,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:32,626 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:32,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2147 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2022-01-10 08:20:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 6023. [2022-01-10 08:20:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6023 states, 5772 states have (on average 1.2104989604989604) internal successors, (6987), 5778 states have internal predecessors, (6987), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 7259 transitions. [2022-01-10 08:20:33,244 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 7259 transitions. Word has length 291 [2022-01-10 08:20:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:33,244 INFO L470 AbstractCegarLoop]: Abstraction has 6023 states and 7259 transitions. [2022-01-10 08:20:33,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 7259 transitions. [2022-01-10 08:20:33,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:33,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:33,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:33,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:33,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:33,457 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -663457948, now seen corresponding path program 1 times [2022-01-10 08:20:33,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:33,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749952655] [2022-01-10 08:20:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:33,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:33,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:33,459 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:33,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-01-10 08:20:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:33,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:20:33,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 08:20:34,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:34,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:34,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749952655] [2022-01-10 08:20:34,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749952655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:34,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:34,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:34,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254357374] [2022-01-10 08:20:34,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:34,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:34,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:34,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:34,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:34,009 INFO L87 Difference]: Start difference. First operand 6023 states and 7259 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:34,909 INFO L93 Difference]: Finished difference Result 12025 states and 14496 transitions. [2022-01-10 08:20:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:20:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:34,919 INFO L225 Difference]: With dead ends: 12025 [2022-01-10 08:20:34,919 INFO L226 Difference]: Without dead ends: 6023 [2022-01-10 08:20:34,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:20:34,924 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 600 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:34,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 1083 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:20:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2022-01-10 08:20:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 6023. [2022-01-10 08:20:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6023 states, 5772 states have (on average 1.208073458073458) internal successors, (6973), 5778 states have internal predecessors, (6973), 136 states have call successors, (136), 113 states have call predecessors, (136), 114 states have return successors, (136), 132 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 08:20:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 7245 transitions. [2022-01-10 08:20:35,520 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 7245 transitions. Word has length 291 [2022-01-10 08:20:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:35,520 INFO L470 AbstractCegarLoop]: Abstraction has 6023 states and 7245 transitions. [2022-01-10 08:20:35,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 7245 transitions. [2022-01-10 08:20:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:35,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:35,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:35,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-01-10 08:20:35,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:35,732 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:35,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:35,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2068649626, now seen corresponding path program 1 times [2022-01-10 08:20:35,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:35,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847571402] [2022-01-10 08:20:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:35,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:35,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:35,734 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:35,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-01-10 08:20:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:35,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:20:35,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 08:20:36,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:36,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847571402] [2022-01-10 08:20:36,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847571402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:36,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:36,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:36,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220921529] [2022-01-10 08:20:36,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:36,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:36,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:36,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:36,305 INFO L87 Difference]: Start difference. First operand 6023 states and 7245 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:37,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:37,413 INFO L93 Difference]: Finished difference Result 12535 states and 15097 transitions. [2022-01-10 08:20:37,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:37,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:37,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:37,424 INFO L225 Difference]: With dead ends: 12535 [2022-01-10 08:20:37,424 INFO L226 Difference]: Without dead ends: 6533 [2022-01-10 08:20:37,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:37,431 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 796 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:37,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1179 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:20:37,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2022-01-10 08:20:38,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 6351. [2022-01-10 08:20:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6351 states, 6088 states have (on average 1.1979303547963207) internal successors, (7293), 6094 states have internal predecessors, (7293), 140 states have call successors, (140), 121 states have call predecessors, (140), 122 states have return successors, (140), 136 states have call predecessors, (140), 138 states have call successors, (140) [2022-01-10 08:20:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6351 states to 6351 states and 7573 transitions. [2022-01-10 08:20:38,045 INFO L78 Accepts]: Start accepts. Automaton has 6351 states and 7573 transitions. Word has length 291 [2022-01-10 08:20:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:38,045 INFO L470 AbstractCegarLoop]: Abstraction has 6351 states and 7573 transitions. [2022-01-10 08:20:38,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6351 states and 7573 transitions. [2022-01-10 08:20:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:38,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:38,048 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:38,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:38,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:38,259 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash -171670168, now seen corresponding path program 1 times [2022-01-10 08:20:38,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:38,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817194566] [2022-01-10 08:20:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:38,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:38,262 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:38,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-01-10 08:20:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:20:38,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 08:20:38,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:38,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:38,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817194566] [2022-01-10 08:20:38,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817194566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:38,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:38,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:38,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567862231] [2022-01-10 08:20:38,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:38,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:20:38,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:38,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:20:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:38,668 INFO L87 Difference]: Start difference. First operand 6351 states and 7573 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:39,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:39,726 INFO L93 Difference]: Finished difference Result 13035 states and 15603 transitions. [2022-01-10 08:20:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:20:39,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:39,739 INFO L225 Difference]: With dead ends: 13035 [2022-01-10 08:20:39,739 INFO L226 Difference]: Without dead ends: 6705 [2022-01-10 08:20:39,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:20:39,746 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 714 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:39,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1105 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:20:39,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2022-01-10 08:20:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 6577. [2022-01-10 08:20:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6310 states have (on average 1.1820919175911253) internal successors, (7459), 6316 states have internal predecessors, (7459), 140 states have call successors, (140), 125 states have call predecessors, (140), 126 states have return successors, (140), 136 states have call predecessors, (140), 138 states have call successors, (140) [2022-01-10 08:20:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 7739 transitions. [2022-01-10 08:20:40,366 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 7739 transitions. Word has length 291 [2022-01-10 08:20:40,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:40,366 INFO L470 AbstractCegarLoop]: Abstraction has 6577 states and 7739 transitions. [2022-01-10 08:20:40,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:40,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 7739 transitions. [2022-01-10 08:20:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:40,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:40,370 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:40,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:40,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:40,580 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:40,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash -102022294, now seen corresponding path program 1 times [2022-01-10 08:20:40,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500361472] [2022-01-10 08:20:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:40,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:40,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:40,583 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:40,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-01-10 08:20:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:40,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:20:40,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 08:20:41,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:41,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:41,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500361472] [2022-01-10 08:20:41,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500361472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:41,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:41,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:41,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292001569] [2022-01-10 08:20:41,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:41,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:20:41,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:41,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:20:41,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:20:41,090 INFO L87 Difference]: Start difference. First operand 6577 states and 7739 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:20:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:42,665 INFO L93 Difference]: Finished difference Result 19550 states and 22973 transitions. [2022-01-10 08:20:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:20:42,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 291 [2022-01-10 08:20:42,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:42,693 INFO L225 Difference]: With dead ends: 19550 [2022-01-10 08:20:42,693 INFO L226 Difference]: Without dead ends: 12996 [2022-01-10 08:20:42,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:20:42,708 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 698 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:42,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1716 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:20:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12996 states. [2022-01-10 08:20:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12996 to 12992. [2022-01-10 08:20:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12992 states, 12470 states have (on average 1.1779470729751402) internal successors, (14689), 12485 states have internal predecessors, (14689), 269 states have call successors, (269), 241 states have call predecessors, (269), 252 states have return successors, (291), 267 states have call predecessors, (291), 267 states have call successors, (291) [2022-01-10 08:20:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12992 states to 12992 states and 15249 transitions. [2022-01-10 08:20:44,303 INFO L78 Accepts]: Start accepts. Automaton has 12992 states and 15249 transitions. Word has length 291 [2022-01-10 08:20:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:44,304 INFO L470 AbstractCegarLoop]: Abstraction has 12992 states and 15249 transitions. [2022-01-10 08:20:44,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:20:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 12992 states and 15249 transitions. [2022-01-10 08:20:44,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-10 08:20:44,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:44,313 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:44,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:44,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:44,524 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1420154456, now seen corresponding path program 1 times [2022-01-10 08:20:44,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:44,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763884011] [2022-01-10 08:20:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:44,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:44,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:44,526 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:44,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-01-10 08:20:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:44,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:20:44,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 08:20:45,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:45,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:45,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763884011] [2022-01-10 08:20:45,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763884011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:45,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:45,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:20:45,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466388109] [2022-01-10 08:20:45,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:45,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:20:45,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:20:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:20:45,056 INFO L87 Difference]: Start difference. First operand 12992 states and 15249 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:20:46,487 INFO L93 Difference]: Finished difference Result 25946 states and 30432 transitions. [2022-01-10 08:20:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:20:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 291 [2022-01-10 08:20:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:20:46,518 INFO L225 Difference]: With dead ends: 25946 [2022-01-10 08:20:46,518 INFO L226 Difference]: Without dead ends: 12977 [2022-01-10 08:20:46,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:20:46,531 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 521 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:20:46,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 530 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:20:46,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12977 states. [2022-01-10 08:20:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12977 to 12977. [2022-01-10 08:20:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12977 states, 12458 states have (on average 1.1772355113180286) internal successors, (14666), 12472 states have internal predecessors, (14666), 266 states have call successors, (266), 241 states have call predecessors, (266), 252 states have return successors, (288), 264 states have call predecessors, (288), 264 states have call successors, (288) [2022-01-10 08:20:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12977 states to 12977 states and 15220 transitions. [2022-01-10 08:20:47,982 INFO L78 Accepts]: Start accepts. Automaton has 12977 states and 15220 transitions. Word has length 291 [2022-01-10 08:20:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:20:47,983 INFO L470 AbstractCegarLoop]: Abstraction has 12977 states and 15220 transitions. [2022-01-10 08:20:47,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:20:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 12977 states and 15220 transitions. [2022-01-10 08:20:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-01-10 08:20:47,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:20:47,989 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:20:48,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-01-10 08:20:48,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:20:48,197 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:20:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:20:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1202423588, now seen corresponding path program 1 times [2022-01-10 08:20:48,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:20:48,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365326660] [2022-01-10 08:20:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:20:48,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:20:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:20:48,199 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:20:48,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-01-10 08:20:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:20:48,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:20:48,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:20:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 08:20:48,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:20:48,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:20:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365326660] [2022-01-10 08:20:48,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365326660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:20:48,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:20:48,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:20:48,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936102770] [2022-01-10 08:20:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:20:48,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:20:48,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:20:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:20:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:20:48,663 INFO L87 Difference]: Start difference. First operand 12977 states and 15220 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)