/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 19:40:04,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 19:40:04,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 19:40:04,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 19:40:04,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 19:40:04,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 19:40:04,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 19:40:04,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 19:40:04,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 19:40:04,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 19:40:04,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 19:40:04,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 19:40:04,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 19:40:04,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 19:40:04,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 19:40:04,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 19:40:04,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 19:40:04,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 19:40:04,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 19:40:04,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 19:40:04,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 19:40:04,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 19:40:04,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 19:40:04,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 19:40:04,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 19:40:04,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 19:40:04,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 19:40:04,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 19:40:04,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 19:40:04,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 19:40:04,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 19:40:04,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 19:40:04,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 19:40:04,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 19:40:04,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 19:40:04,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 19:40:04,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 19:40:04,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 19:40:04,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 19:40:04,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 19:40:04,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 19:40:04,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 19:40:04,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 19:40:04,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 19:40:04,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 19:40:04,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 19:40:04,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 19:40:04,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 19:40:04,643 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 19:40:04,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 19:40:04,644 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 19:40:04,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 19:40:04,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 19:40:04,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 19:40:04,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 19:40:04,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:40:04,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 19:40:04,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 19:40:04,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 19:40:04,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 19:40:04,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 19:40:04,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 19:40:04,973 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 19:40:04,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-11 19:40:05,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 19:40:06,196 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 19:40:06,196 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-12-11 19:40:06,208 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e159624a2/0869a01f12b04263a3d81de19025f2ff/FLAG499581074 [2022-12-11 19:40:06,218 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e159624a2/0869a01f12b04263a3d81de19025f2ff [2022-12-11 19:40:06,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 19:40:06,221 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 19:40:06,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 19:40:06,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 19:40:06,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 19:40:06,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e71bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06, skipping insertion in model container [2022-12-11 19:40:06,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 19:40:06,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 19:40:06,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,414 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-11 19:40:06,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:40:06,439 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 19:40:06,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 19:40:06,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 19:40:06,489 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-12-11 19:40:06,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 19:40:06,503 INFO L208 MainTranslator]: Completed translation [2022-12-11 19:40:06,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06 WrapperNode [2022-12-11 19:40:06,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 19:40:06,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 19:40:06,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 19:40:06,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 19:40:06,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,569 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 460 [2022-12-11 19:40:06,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 19:40:06,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 19:40:06,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 19:40:06,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 19:40:06,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 19:40:06,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 19:40:06,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 19:40:06,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 19:40:06,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (1/1) ... [2022-12-11 19:40:06,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 19:40:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:40:06,665 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) [2022-12-11 19:40:06,683 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 [2022-12-11 19:40:06,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 19:40:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 19:40:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 19:40:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 19:40:06,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 19:40:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 19:40:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 19:40:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 19:40:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 19:40:06,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 19:40:06,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-11 19:40:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-11 19:40:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 19:40:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 19:40:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 19:40:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 19:40:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 19:40:06,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 19:40:06,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 19:40:06,697 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 19:40:06,785 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 19:40:06,798 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 19:40:07,244 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 19:40:07,405 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 19:40:07,406 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-11 19:40:07,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:40:07 BoogieIcfgContainer [2022-12-11 19:40:07,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 19:40:07,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 19:40:07,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 19:40:07,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 19:40:07,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 07:40:06" (1/3) ... [2022-12-11 19:40:07,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53524500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:40:07, skipping insertion in model container [2022-12-11 19:40:07,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 07:40:06" (2/3) ... [2022-12-11 19:40:07,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53524500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 07:40:07, skipping insertion in model container [2022-12-11 19:40:07,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 07:40:07" (3/3) ... [2022-12-11 19:40:07,425 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-12-11 19:40:07,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 19:40:07,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 19:40:07,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 19:40:07,518 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-11 19:40:07,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 331 transitions, 694 flow [2022-12-11 19:40:07,657 INFO L130 PetriNetUnfolder]: 37/327 cut-off events. [2022-12-11 19:40:07,658 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 19:40:07,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 327 events. 37/327 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 285. Up to 8 conditions per place. [2022-12-11 19:40:07,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 331 transitions, 694 flow [2022-12-11 19:40:07,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 315 transitions, 654 flow [2022-12-11 19:40:07,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 19:40:07,688 INFO L357 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=false, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51ae2f20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 19:40:07,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-11 19:40:07,749 INFO L130 PetriNetUnfolder]: 37/314 cut-off events. [2022-12-11 19:40:07,750 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 19:40:07,750 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:07,751 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:07,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1523517568, now seen corresponding path program 1 times [2022-12-11 19:40:07,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:07,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973986704] [2022-12-11 19:40:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:07,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:08,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973986704] [2022-12-11 19:40:08,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973986704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:08,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:08,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 19:40:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676165472] [2022-12-11 19:40:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 19:40:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 19:40:08,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 19:40:08,148 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 331 [2022-12-11 19:40:08,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 315 transitions, 654 flow. Second operand has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:08,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:08,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 331 [2022-12-11 19:40:08,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:08,244 INFO L130 PetriNetUnfolder]: 56/334 cut-off events. [2022-12-11 19:40:08,248 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-11 19:40:08,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 334 events. 56/334 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 261 event pairs, 0 based on Foata normal form. 29/331 useless extension candidates. Maximal degree in co-relation 311. Up to 57 conditions per place. [2022-12-11 19:40:08,255 INFO L137 encePairwiseOnDemand]: 314/331 looper letters, 20 selfloop transitions, 0 changer transitions 9/298 dead transitions. [2022-12-11 19:40:08,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 298 transitions, 660 flow [2022-12-11 19:40:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 19:40:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 19:40:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 623 transitions. [2022-12-11 19:40:08,269 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9410876132930514 [2022-12-11 19:40:08,271 INFO L175 Difference]: Start difference. First operand has 291 places, 315 transitions, 654 flow. Second operand 2 states and 623 transitions. [2022-12-11 19:40:08,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 298 transitions, 660 flow [2022-12-11 19:40:08,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 298 transitions, 644 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-11 19:40:08,282 INFO L231 Difference]: Finished difference. Result has 284 places, 289 transitions, 586 flow [2022-12-11 19:40:08,283 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=586, PETRI_PLACES=284, PETRI_TRANSITIONS=289} [2022-12-11 19:40:08,287 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, -7 predicate places. [2022-12-11 19:40:08,287 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 289 transitions, 586 flow [2022-12-11 19:40:08,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:08,287 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:08,288 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:08,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 19:40:08,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1562130048, now seen corresponding path program 1 times [2022-12-11 19:40:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:08,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500044915] [2022-12-11 19:40:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:08,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:08,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:08,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500044915] [2022-12-11 19:40:08,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500044915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:08,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:08,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 19:40:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709757865] [2022-12-11 19:40:08,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 19:40:08,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 19:40:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-11 19:40:08,816 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 331 [2022-12-11 19:40:08,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 289 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:08,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:08,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 331 [2022-12-11 19:40:08,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:08,997 INFO L130 PetriNetUnfolder]: 107/462 cut-off events. [2022-12-11 19:40:08,997 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-11 19:40:08,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 462 events. 107/462 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 744 event pairs, 0 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 621. Up to 85 conditions per place. [2022-12-11 19:40:09,001 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 69 selfloop transitions, 7 changer transitions 4/311 dead transitions. [2022-12-11 19:40:09,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 797 flow [2022-12-11 19:40:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 19:40:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 19:40:09,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1311 transitions. [2022-12-11 19:40:09,004 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7921450151057402 [2022-12-11 19:40:09,004 INFO L175 Difference]: Start difference. First operand has 284 places, 289 transitions, 586 flow. Second operand 5 states and 1311 transitions. [2022-12-11 19:40:09,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 797 flow [2022-12-11 19:40:09,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 311 transitions, 797 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 19:40:09,012 INFO L231 Difference]: Finished difference. Result has 282 places, 295 transitions, 637 flow [2022-12-11 19:40:09,012 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=637, PETRI_PLACES=282, PETRI_TRANSITIONS=295} [2022-12-11 19:40:09,013 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, -9 predicate places. [2022-12-11 19:40:09,013 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 295 transitions, 637 flow [2022-12-11 19:40:09,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:09,014 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:09,014 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:09,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 19:40:09,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash -363728430, now seen corresponding path program 1 times [2022-12-11 19:40:09,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:09,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979387573] [2022-12-11 19:40:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:09,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:09,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979387573] [2022-12-11 19:40:09,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979387573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:09,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:09,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:09,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662620101] [2022-12-11 19:40:09,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:09,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:09,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:09,362 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 331 [2022-12-11 19:40:09,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 295 transitions, 637 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:09,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:09,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 331 [2022-12-11 19:40:09,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:09,493 INFO L130 PetriNetUnfolder]: 171/621 cut-off events. [2022-12-11 19:40:09,494 INFO L131 PetriNetUnfolder]: For 86/90 co-relation queries the response was YES. [2022-12-11 19:40:09,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 621 events. 171/621 cut-off events. For 86/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1488 event pairs, 3 based on Foata normal form. 19/563 useless extension candidates. Maximal degree in co-relation 923. Up to 124 conditions per place. [2022-12-11 19:40:09,501 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 43 selfloop transitions, 8 changer transitions 0/313 dead transitions. [2022-12-11 19:40:09,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 313 transitions, 796 flow [2022-12-11 19:40:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 903 transitions. [2022-12-11 19:40:09,503 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9093655589123867 [2022-12-11 19:40:09,503 INFO L175 Difference]: Start difference. First operand has 282 places, 295 transitions, 637 flow. Second operand 3 states and 903 transitions. [2022-12-11 19:40:09,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 313 transitions, 796 flow [2022-12-11 19:40:09,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 313 transitions, 782 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-11 19:40:09,509 INFO L231 Difference]: Finished difference. Result has 280 places, 298 transitions, 674 flow [2022-12-11 19:40:09,509 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=674, PETRI_PLACES=280, PETRI_TRANSITIONS=298} [2022-12-11 19:40:09,510 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, -11 predicate places. [2022-12-11 19:40:09,510 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 298 transitions, 674 flow [2022-12-11 19:40:09,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:09,511 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:09,511 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:09,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 19:40:09,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:09,512 INFO L85 PathProgramCache]: Analyzing trace with hash -50464878, now seen corresponding path program 1 times [2022-12-11 19:40:09,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:09,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498946529] [2022-12-11 19:40:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:09,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:09,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:09,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498946529] [2022-12-11 19:40:09,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498946529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:09,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:09,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685010395] [2022-12-11 19:40:09,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:09,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:09,766 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 331 [2022-12-11 19:40:09,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 298 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:09,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:09,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 331 [2022-12-11 19:40:09,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:09,954 INFO L130 PetriNetUnfolder]: 317/1036 cut-off events. [2022-12-11 19:40:09,954 INFO L131 PetriNetUnfolder]: For 274/286 co-relation queries the response was YES. [2022-12-11 19:40:09,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 1036 events. 317/1036 cut-off events. For 274/286 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3971 event pairs, 15 based on Foata normal form. 15/895 useless extension candidates. Maximal degree in co-relation 1700. Up to 194 conditions per place. [2022-12-11 19:40:09,967 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 57 selfloop transitions, 2 changer transitions 0/324 dead transitions. [2022-12-11 19:40:09,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 324 transitions, 898 flow [2022-12-11 19:40:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2022-12-11 19:40:09,969 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9164149043303121 [2022-12-11 19:40:09,969 INFO L175 Difference]: Start difference. First operand has 280 places, 298 transitions, 674 flow. Second operand 3 states and 910 transitions. [2022-12-11 19:40:09,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 324 transitions, 898 flow [2022-12-11 19:40:09,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 324 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:40:09,974 INFO L231 Difference]: Finished difference. Result has 282 places, 299 transitions, 680 flow [2022-12-11 19:40:09,975 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=282, PETRI_TRANSITIONS=299} [2022-12-11 19:40:09,976 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, -9 predicate places. [2022-12-11 19:40:09,976 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 299 transitions, 680 flow [2022-12-11 19:40:09,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:09,977 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:09,977 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:09,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 19:40:09,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1103148154, now seen corresponding path program 1 times [2022-12-11 19:40:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:09,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997976483] [2022-12-11 19:40:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:10,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997976483] [2022-12-11 19:40:10,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997976483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:10,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:10,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:10,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259734705] [2022-12-11 19:40:10,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:10,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:10,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:10,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:10,219 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 331 [2022-12-11 19:40:10,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 299 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:10,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:10,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 331 [2022-12-11 19:40:10,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:10,504 INFO L130 PetriNetUnfolder]: 579/1827 cut-off events. [2022-12-11 19:40:10,504 INFO L131 PetriNetUnfolder]: For 682/698 co-relation queries the response was YES. [2022-12-11 19:40:10,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 1827 events. 579/1827 cut-off events. For 682/698 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10022 event pairs, 29 based on Foata normal form. 33/1530 useless extension candidates. Maximal degree in co-relation 3077. Up to 363 conditions per place. [2022-12-11 19:40:10,519 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 59 selfloop transitions, 2 changer transitions 0/326 dead transitions. [2022-12-11 19:40:10,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 326 transitions, 916 flow [2022-12-11 19:40:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2022-12-11 19:40:10,521 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9164149043303121 [2022-12-11 19:40:10,521 INFO L175 Difference]: Start difference. First operand has 282 places, 299 transitions, 680 flow. Second operand 3 states and 910 transitions. [2022-12-11 19:40:10,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 326 transitions, 916 flow [2022-12-11 19:40:10,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 326 transitions, 913 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:40:10,527 INFO L231 Difference]: Finished difference. Result has 284 places, 300 transitions, 692 flow [2022-12-11 19:40:10,527 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=284, PETRI_TRANSITIONS=300} [2022-12-11 19:40:10,529 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, -7 predicate places. [2022-12-11 19:40:10,530 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 300 transitions, 692 flow [2022-12-11 19:40:10,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:10,530 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:10,533 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:10,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 19:40:10,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:10,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1478225685, now seen corresponding path program 1 times [2022-12-11 19:40:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:10,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890259567] [2022-12-11 19:40:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:10,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:10,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890259567] [2022-12-11 19:40:10,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890259567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:10,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:10,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:10,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745037755] [2022-12-11 19:40:10,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:10,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:10,611 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 331 [2022-12-11 19:40:10,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 300 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:10,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:10,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 331 [2022-12-11 19:40:10,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:11,053 INFO L130 PetriNetUnfolder]: 1212/3021 cut-off events. [2022-12-11 19:40:11,053 INFO L131 PetriNetUnfolder]: For 1595/1721 co-relation queries the response was YES. [2022-12-11 19:40:11,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 3021 events. 1212/3021 cut-off events. For 1595/1721 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18520 event pairs, 155 based on Foata normal form. 27/2480 useless extension candidates. Maximal degree in co-relation 5767. Up to 847 conditions per place. [2022-12-11 19:40:11,081 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 52 selfloop transitions, 6 changer transitions 0/322 dead transitions. [2022-12-11 19:40:11,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 322 transitions, 909 flow [2022-12-11 19:40:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:11,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2022-12-11 19:40:11,083 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9113796576032226 [2022-12-11 19:40:11,083 INFO L175 Difference]: Start difference. First operand has 284 places, 300 transitions, 692 flow. Second operand 3 states and 905 transitions. [2022-12-11 19:40:11,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 322 transitions, 909 flow [2022-12-11 19:40:11,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 322 transitions, 906 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:40:11,089 INFO L231 Difference]: Finished difference. Result has 287 places, 301 transitions, 720 flow [2022-12-11 19:40:11,090 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=720, PETRI_PLACES=287, PETRI_TRANSITIONS=301} [2022-12-11 19:40:11,090 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, -4 predicate places. [2022-12-11 19:40:11,090 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 301 transitions, 720 flow [2022-12-11 19:40:11,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:11,091 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:11,091 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:11,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 19:40:11,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash -62537064, now seen corresponding path program 1 times [2022-12-11 19:40:11,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:11,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179566] [2022-12-11 19:40:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:11,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:40:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:11,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179566] [2022-12-11 19:40:11,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:11,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:11,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:40:11,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787454883] [2022-12-11 19:40:11,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:11,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:40:11,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:40:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:40:11,265 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 331 [2022-12-11 19:40:11,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 301 transitions, 720 flow. Second operand has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:11,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:11,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 331 [2022-12-11 19:40:11,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:11,778 INFO L130 PetriNetUnfolder]: 807/2853 cut-off events. [2022-12-11 19:40:11,778 INFO L131 PetriNetUnfolder]: For 1871/2060 co-relation queries the response was YES. [2022-12-11 19:40:11,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 2853 events. 807/2853 cut-off events. For 1871/2060 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18323 event pairs, 117 based on Foata normal form. 95/2423 useless extension candidates. Maximal degree in co-relation 5058. Up to 794 conditions per place. [2022-12-11 19:40:11,805 INFO L137 encePairwiseOnDemand]: 319/331 looper letters, 128 selfloop transitions, 11 changer transitions 0/359 dead transitions. [2022-12-11 19:40:11,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 359 transitions, 1146 flow [2022-12-11 19:40:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:40:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:40:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2314 transitions. [2022-12-11 19:40:11,809 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7767707284323598 [2022-12-11 19:40:11,809 INFO L175 Difference]: Start difference. First operand has 287 places, 301 transitions, 720 flow. Second operand 9 states and 2314 transitions. [2022-12-11 19:40:11,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 359 transitions, 1146 flow [2022-12-11 19:40:11,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 359 transitions, 1134 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 19:40:11,815 INFO L231 Difference]: Finished difference. Result has 295 places, 305 transitions, 754 flow [2022-12-11 19:40:11,815 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=295, PETRI_TRANSITIONS=305} [2022-12-11 19:40:11,815 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 4 predicate places. [2022-12-11 19:40:11,816 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 305 transitions, 754 flow [2022-12-11 19:40:11,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:11,816 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:11,817 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:11,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 19:40:11,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:11,817 INFO L85 PathProgramCache]: Analyzing trace with hash -894263996, now seen corresponding path program 1 times [2022-12-11 19:40:11,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:11,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928521226] [2022-12-11 19:40:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:11,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:40:11,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:11,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928521226] [2022-12-11 19:40:11,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928521226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:11,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:11,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558514000] [2022-12-11 19:40:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:11,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:11,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:11,909 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-12-11 19:40:11,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 305 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:11,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:11,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-12-11 19:40:11,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:12,240 INFO L130 PetriNetUnfolder]: 1134/2401 cut-off events. [2022-12-11 19:40:12,241 INFO L131 PetriNetUnfolder]: For 1903/2070 co-relation queries the response was YES. [2022-12-11 19:40:12,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5516 conditions, 2401 events. 1134/2401 cut-off events. For 1903/2070 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9867 event pairs, 43 based on Foata normal form. 2/2191 useless extension candidates. Maximal degree in co-relation 5505. Up to 1047 conditions per place. [2022-12-11 19:40:12,266 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 48 selfloop transitions, 5 changer transitions 3/314 dead transitions. [2022-12-11 19:40:12,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 314 transitions, 888 flow [2022-12-11 19:40:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2022-12-11 19:40:12,268 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8932527693856999 [2022-12-11 19:40:12,268 INFO L175 Difference]: Start difference. First operand has 295 places, 305 transitions, 754 flow. Second operand 3 states and 887 transitions. [2022-12-11 19:40:12,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 314 transitions, 888 flow [2022-12-11 19:40:12,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 879 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-11 19:40:12,274 INFO L231 Difference]: Finished difference. Result has 296 places, 299 transitions, 734 flow [2022-12-11 19:40:12,274 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=734, PETRI_PLACES=296, PETRI_TRANSITIONS=299} [2022-12-11 19:40:12,275 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 5 predicate places. [2022-12-11 19:40:12,275 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 299 transitions, 734 flow [2022-12-11 19:40:12,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:12,275 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:12,276 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 19:40:12,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:12,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:12,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2058419274, now seen corresponding path program 1 times [2022-12-11 19:40:12,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:12,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443206741] [2022-12-11 19:40:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:12,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:13,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443206741] [2022-12-11 19:40:13,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443206741] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:40:13,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590726456] [2022-12-11 19:40:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:13,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:40:13,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:40:13,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:40:13,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 19:40:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:13,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-11 19:40:13,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:40:14,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-11 19:40:15,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:15,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:15,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:16,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:16,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:40:17,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:40:17,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2022-12-11 19:40:17,724 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-11 19:40:17,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1606 treesize of output 1549 [2022-12-11 19:40:17,754 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:40:17,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1542 treesize of output 1158 [2022-12-11 19:40:17,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 19:40:17,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 579 treesize of output 531 [2022-12-11 19:40:17,776 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:40:17,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1110 treesize of output 918 [2022-12-11 19:40:17,789 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:40:17,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 918 treesize of output 822 [2022-12-11 19:40:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 19:40:20,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590726456] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:40:20,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:40:20,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30, 24] total 64 [2022-12-11 19:40:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712216272] [2022-12-11 19:40:20,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:40:20,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-11 19:40:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:20,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-11 19:40:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=3287, Unknown=34, NotChecked=0, Total=4032 [2022-12-11 19:40:20,759 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 331 [2022-12-11 19:40:20,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 299 transitions, 734 flow. Second operand has 64 states, 64 states have (on average 152.15625) internal successors, (9738), 64 states have internal predecessors, (9738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:20,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:20,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 331 [2022-12-11 19:40:20,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:26,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-11 19:40:28,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-11 19:40:33,359 INFO L130 PetriNetUnfolder]: 6270/16360 cut-off events. [2022-12-11 19:40:33,360 INFO L131 PetriNetUnfolder]: For 12740/14100 co-relation queries the response was YES. [2022-12-11 19:40:33,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35651 conditions, 16360 events. 6270/16360 cut-off events. For 12740/14100 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 154015 event pairs, 26 based on Foata normal form. 48/14432 useless extension candidates. Maximal degree in co-relation 35639. Up to 3719 conditions per place. [2022-12-11 19:40:33,544 INFO L137 encePairwiseOnDemand]: 285/331 looper letters, 471 selfloop transitions, 119 changer transitions 16/748 dead transitions. [2022-12-11 19:40:33,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 748 transitions, 3552 flow [2022-12-11 19:40:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-11 19:40:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-11 19:40:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 8665 transitions. [2022-12-11 19:40:33,562 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4759681406207086 [2022-12-11 19:40:33,562 INFO L175 Difference]: Start difference. First operand has 296 places, 299 transitions, 734 flow. Second operand 55 states and 8665 transitions. [2022-12-11 19:40:33,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 748 transitions, 3552 flow [2022-12-11 19:40:33,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 748 transitions, 3479 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 19:40:33,579 INFO L231 Difference]: Finished difference. Result has 364 places, 408 transitions, 1726 flow [2022-12-11 19:40:33,579 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1726, PETRI_PLACES=364, PETRI_TRANSITIONS=408} [2022-12-11 19:40:33,580 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 73 predicate places. [2022-12-11 19:40:33,581 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 408 transitions, 1726 flow [2022-12-11 19:40:33,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 152.15625) internal successors, (9738), 64 states have internal predecessors, (9738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:33,585 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:33,585 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:33,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 19:40:33,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:40:33,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash -23567211, now seen corresponding path program 1 times [2022-12-11 19:40:33,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:33,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451416735] [2022-12-11 19:40:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:33,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:40:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:33,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451416735] [2022-12-11 19:40:33,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451416735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:33,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:33,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57811677] [2022-12-11 19:40:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:33,887 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 331 [2022-12-11 19:40:33,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 408 transitions, 1726 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:33,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:33,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 331 [2022-12-11 19:40:33,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:36,865 INFO L130 PetriNetUnfolder]: 7053/17796 cut-off events. [2022-12-11 19:40:36,865 INFO L131 PetriNetUnfolder]: For 36997/39820 co-relation queries the response was YES. [2022-12-11 19:40:36,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47470 conditions, 17796 events. 7053/17796 cut-off events. For 36997/39820 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 174236 event pairs, 893 based on Foata normal form. 62/15362 useless extension candidates. Maximal degree in co-relation 47438. Up to 5044 conditions per place. [2022-12-11 19:40:37,183 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 148 selfloop transitions, 14 changer transitions 0/442 dead transitions. [2022-12-11 19:40:37,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 442 transitions, 2307 flow [2022-12-11 19:40:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2022-12-11 19:40:37,185 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9123867069486404 [2022-12-11 19:40:37,185 INFO L175 Difference]: Start difference. First operand has 364 places, 408 transitions, 1726 flow. Second operand 3 states and 906 transitions. [2022-12-11 19:40:37,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 442 transitions, 2307 flow [2022-12-11 19:40:37,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 442 transitions, 2002 flow, removed 124 selfloop flow, removed 28 redundant places. [2022-12-11 19:40:37,238 INFO L231 Difference]: Finished difference. Result has 332 places, 389 transitions, 1412 flow [2022-12-11 19:40:37,239 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1412, PETRI_PLACES=332, PETRI_TRANSITIONS=389} [2022-12-11 19:40:37,239 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 41 predicate places. [2022-12-11 19:40:37,239 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 389 transitions, 1412 flow [2022-12-11 19:40:37,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:37,240 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:37,240 INFO L214 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:37,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-11 19:40:37,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1078534332, now seen corresponding path program 1 times [2022-12-11 19:40:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:37,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350931622] [2022-12-11 19:40:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:37,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:40:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:37,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350931622] [2022-12-11 19:40:37,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350931622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:37,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:37,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:37,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215791495] [2022-12-11 19:40:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:37,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:37,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:37,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:37,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:37,302 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 331 [2022-12-11 19:40:37,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 389 transitions, 1412 flow. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:37,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:37,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 331 [2022-12-11 19:40:37,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:40,820 INFO L130 PetriNetUnfolder]: 8290/22332 cut-off events. [2022-12-11 19:40:40,820 INFO L131 PetriNetUnfolder]: For 48228/52666 co-relation queries the response was YES. [2022-12-11 19:40:40,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56310 conditions, 22332 events. 8290/22332 cut-off events. For 48228/52666 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 243138 event pairs, 1355 based on Foata normal form. 65/19487 useless extension candidates. Maximal degree in co-relation 56286. Up to 5966 conditions per place. [2022-12-11 19:40:41,039 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 127 selfloop transitions, 13 changer transitions 0/420 dead transitions. [2022-12-11 19:40:41,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 420 transitions, 1919 flow [2022-12-11 19:40:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2022-12-11 19:40:41,043 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9113796576032226 [2022-12-11 19:40:41,044 INFO L175 Difference]: Start difference. First operand has 332 places, 389 transitions, 1412 flow. Second operand 3 states and 905 transitions. [2022-12-11 19:40:41,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 420 transitions, 1919 flow [2022-12-11 19:40:41,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 420 transitions, 1819 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-12-11 19:40:41,081 INFO L231 Difference]: Finished difference. Result has 332 places, 373 transitions, 1302 flow [2022-12-11 19:40:41,082 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1302, PETRI_PLACES=332, PETRI_TRANSITIONS=373} [2022-12-11 19:40:41,082 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 41 predicate places. [2022-12-11 19:40:41,083 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 373 transitions, 1302 flow [2022-12-11 19:40:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:41,083 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:41,083 INFO L214 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:41,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-11 19:40:41,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:41,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash -897831759, now seen corresponding path program 1 times [2022-12-11 19:40:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:41,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951961889] [2022-12-11 19:40:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:41,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 19:40:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:41,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951961889] [2022-12-11 19:40:41,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951961889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:41,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:41,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769078902] [2022-12-11 19:40:41,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:41,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:41,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:41,248 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 331 [2022-12-11 19:40:41,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 373 transitions, 1302 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:41,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:41,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 331 [2022-12-11 19:40:41,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:43,456 INFO L130 PetriNetUnfolder]: 4016/14156 cut-off events. [2022-12-11 19:40:43,456 INFO L131 PetriNetUnfolder]: For 31661/33831 co-relation queries the response was YES. [2022-12-11 19:40:43,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34350 conditions, 14156 events. 4016/14156 cut-off events. For 31661/33831 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 153852 event pairs, 470 based on Foata normal form. 267/12862 useless extension candidates. Maximal degree in co-relation 34326. Up to 3901 conditions per place. [2022-12-11 19:40:43,606 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 143 selfloop transitions, 2 changer transitions 0/427 dead transitions. [2022-12-11 19:40:43,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 427 transitions, 1964 flow [2022-12-11 19:40:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2022-12-11 19:40:43,608 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9133937562940584 [2022-12-11 19:40:43,608 INFO L175 Difference]: Start difference. First operand has 332 places, 373 transitions, 1302 flow. Second operand 3 states and 907 transitions. [2022-12-11 19:40:43,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 427 transitions, 1964 flow [2022-12-11 19:40:43,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 427 transitions, 1916 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 19:40:43,627 INFO L231 Difference]: Finished difference. Result has 332 places, 369 transitions, 1256 flow [2022-12-11 19:40:43,628 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1256, PETRI_PLACES=332, PETRI_TRANSITIONS=369} [2022-12-11 19:40:43,628 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 41 predicate places. [2022-12-11 19:40:43,629 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 369 transitions, 1256 flow [2022-12-11 19:40:43,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:43,629 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:43,629 INFO L214 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:43,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-11 19:40:43,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1209380552, now seen corresponding path program 2 times [2022-12-11 19:40:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:43,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284368681] [2022-12-11 19:40:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 19:40:43,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:43,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284368681] [2022-12-11 19:40:43,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284368681] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:43,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:43,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:43,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012422161] [2022-12-11 19:40:43,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:43,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:43,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:43,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:43,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:43,804 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-12-11 19:40:43,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 369 transitions, 1256 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:43,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:43,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-12-11 19:40:43,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:47,262 INFO L130 PetriNetUnfolder]: 8998/22330 cut-off events. [2022-12-11 19:40:47,262 INFO L131 PetriNetUnfolder]: For 75841/79845 co-relation queries the response was YES. [2022-12-11 19:40:47,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67404 conditions, 22330 events. 8998/22330 cut-off events. For 75841/79845 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 222514 event pairs, 1023 based on Foata normal form. 36/19691 useless extension candidates. Maximal degree in co-relation 67379. Up to 8652 conditions per place. [2022-12-11 19:40:47,656 INFO L137 encePairwiseOnDemand]: 326/331 looper letters, 121 selfloop transitions, 15 changer transitions 0/408 dead transitions. [2022-12-11 19:40:47,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 408 transitions, 1795 flow [2022-12-11 19:40:47,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:47,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 887 transitions. [2022-12-11 19:40:47,658 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8932527693856999 [2022-12-11 19:40:47,658 INFO L175 Difference]: Start difference. First operand has 332 places, 369 transitions, 1256 flow. Second operand 3 states and 887 transitions. [2022-12-11 19:40:47,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 408 transitions, 1795 flow [2022-12-11 19:40:47,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 408 transitions, 1793 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 19:40:47,683 INFO L231 Difference]: Finished difference. Result has 335 places, 370 transitions, 1322 flow [2022-12-11 19:40:47,684 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1322, PETRI_PLACES=335, PETRI_TRANSITIONS=370} [2022-12-11 19:40:47,684 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 44 predicate places. [2022-12-11 19:40:47,684 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 370 transitions, 1322 flow [2022-12-11 19:40:47,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:47,685 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:47,685 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:47,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-11 19:40:47,685 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:47,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1975792362, now seen corresponding path program 1 times [2022-12-11 19:40:47,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:47,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230443194] [2022-12-11 19:40:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:47,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 19:40:47,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230443194] [2022-12-11 19:40:47,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230443194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:47,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:47,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 19:40:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656929021] [2022-12-11 19:40:47,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:47,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 19:40:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:47,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 19:40:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 19:40:47,750 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 331 [2022-12-11 19:40:47,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 370 transitions, 1322 flow. Second operand has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:47,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:47,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 331 [2022-12-11 19:40:47,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:50,876 INFO L130 PetriNetUnfolder]: 8199/19121 cut-off events. [2022-12-11 19:40:50,876 INFO L131 PetriNetUnfolder]: For 77514/81414 co-relation queries the response was YES. [2022-12-11 19:40:51,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61952 conditions, 19121 events. 8199/19121 cut-off events. For 77514/81414 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 173609 event pairs, 957 based on Foata normal form. 154/17579 useless extension candidates. Maximal degree in co-relation 61926. Up to 7754 conditions per place. [2022-12-11 19:40:51,156 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 133 selfloop transitions, 5 changer transitions 0/410 dead transitions. [2022-12-11 19:40:51,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 410 transitions, 1869 flow [2022-12-11 19:40:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 19:40:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 19:40:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2022-12-11 19:40:51,158 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8952668680765358 [2022-12-11 19:40:51,158 INFO L175 Difference]: Start difference. First operand has 335 places, 370 transitions, 1322 flow. Second operand 3 states and 889 transitions. [2022-12-11 19:40:51,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 410 transitions, 1869 flow [2022-12-11 19:40:51,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 410 transitions, 1839 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 19:40:51,189 INFO L231 Difference]: Finished difference. Result has 337 places, 371 transitions, 1322 flow [2022-12-11 19:40:51,189 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1322, PETRI_PLACES=337, PETRI_TRANSITIONS=371} [2022-12-11 19:40:51,190 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 46 predicate places. [2022-12-11 19:40:51,190 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 371 transitions, 1322 flow [2022-12-11 19:40:51,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:51,190 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:51,190 INFO L214 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:51,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-11 19:40:51,190 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash -849989110, now seen corresponding path program 1 times [2022-12-11 19:40:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:51,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185107611] [2022-12-11 19:40:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 19:40:51,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:51,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185107611] [2022-12-11 19:40:51,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185107611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 19:40:51,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 19:40:51,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 19:40:51,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642312419] [2022-12-11 19:40:51,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 19:40:51,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 19:40:51,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:40:51,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 19:40:51,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 19:40:51,484 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 331 [2022-12-11 19:40:51,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 371 transitions, 1322 flow. Second operand has 6 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:51,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:40:51,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 331 [2022-12-11 19:40:51,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 19:40:53,691 INFO L130 PetriNetUnfolder]: 3998/14094 cut-off events. [2022-12-11 19:40:53,692 INFO L131 PetriNetUnfolder]: For 30282/32296 co-relation queries the response was YES. [2022-12-11 19:40:53,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35328 conditions, 14094 events. 3998/14094 cut-off events. For 30282/32296 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 147871 event pairs, 618 based on Foata normal form. 3/12547 useless extension candidates. Maximal degree in co-relation 35301. Up to 4856 conditions per place. [2022-12-11 19:40:53,837 INFO L137 encePairwiseOnDemand]: 321/331 looper letters, 136 selfloop transitions, 8 changer transitions 31/406 dead transitions. [2022-12-11 19:40:53,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 406 transitions, 1809 flow [2022-12-11 19:40:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 19:40:53,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 19:40:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2285 transitions. [2022-12-11 19:40:53,841 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.76703591809332 [2022-12-11 19:40:53,841 INFO L175 Difference]: Start difference. First operand has 337 places, 371 transitions, 1322 flow. Second operand 9 states and 2285 transitions. [2022-12-11 19:40:53,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 406 transitions, 1809 flow [2022-12-11 19:40:53,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 406 transitions, 1799 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 19:40:53,861 INFO L231 Difference]: Finished difference. Result has 345 places, 372 transitions, 1340 flow [2022-12-11 19:40:53,861 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1340, PETRI_PLACES=345, PETRI_TRANSITIONS=372} [2022-12-11 19:40:53,861 INFO L295 CegarLoopForPetriNet]: 291 programPoint places, 54 predicate places. [2022-12-11 19:40:53,861 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 372 transitions, 1340 flow [2022-12-11 19:40:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:40:53,862 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 19:40:53,862 INFO L214 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 19:40:53,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-11 19:40:53,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 19:40:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 19:40:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1914582713, now seen corresponding path program 1 times [2022-12-11 19:40:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 19:40:53,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685217535] [2022-12-11 19:40:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 19:40:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 19:40:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 19:40:54,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685217535] [2022-12-11 19:40:54,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685217535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 19:40:54,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919622293] [2022-12-11 19:40:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 19:40:54,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 19:40:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 19:40:54,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 19:40:54,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 19:40:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 19:40:54,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-11 19:40:55,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 19:40:55,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-11 19:40:56,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:56,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:56,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:56,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-11 19:40:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 19:40:57,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 19:41:00,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 19:41:00,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2022-12-11 19:41:00,541 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-11 19:41:00,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 394 treesize of output 385 [2022-12-11 19:41:00,553 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:41:00,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 378 treesize of output 282 [2022-12-11 19:41:00,566 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:41:00,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 282 treesize of output 234 [2022-12-11 19:41:00,576 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:41:00,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 210 [2022-12-11 19:41:00,588 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 19:41:00,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 98 [2022-12-11 19:41:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-11 19:41:01,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919622293] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 19:41:01,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 19:41:01,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 21] total 58 [2022-12-11 19:41:01,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493818730] [2022-12-11 19:41:01,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 19:41:01,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-11 19:41:01,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 19:41:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-11 19:41:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=2737, Unknown=32, NotChecked=0, Total=3306 [2022-12-11 19:41:01,119 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 331 [2022-12-11 19:41:01,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 372 transitions, 1340 flow. Second operand has 58 states, 58 states have (on average 139.6551724137931) internal successors, (8100), 58 states have internal predecessors, (8100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 19:41:01,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 19:41:01,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 331 [2022-12-11 19:41:01,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand